| Article | Signals | Class | Rule |
| Angenent torus | S1,S9 | C | strong |
| Anger function | S1,S4,S5,S6,S8,S9 | Start | strong |
| Angie Hodge-Zickerman | S1 | Start | strong |
| Angkana Rüland | S1 | Start | strong |
| Angle | S1,S3,S4,S5,S6,S8 | C | strong |
| Angle bisector theorem | S1,S4,S5,S6,S8,S9 | Start | strong |
| Angle of parallelism | S1,S4,S5,S6,S8,S9 | B | strong |
| Angle trisection | S1,S4,S5,S6,S8,S9 | C | strong |
| Angles between flats | S1,S6,S9 | C | strong |
| Angry white male | S2 | C | strong |
| Angular acceleration | S3,S4,S5,S6,S8 | Start | strong |
| Angular defect | S1,S4,S5,S8,S9 | Start | strong |
| Angular distance | S1,S5,S6,S8 | Start | strong |
| Angular momentum | S3,S4,S5,S6,S8 | B | strong |
| Angular momentum operator | S3,S4,S6,S8,S9 | B | strong |
| Angular resolution | S4,S5,S6 | | strong |
| Angular resolution (graph drawing) | S1 | C | strong |
| Angular spectrum method | S3,S4 | Stub | strong |
| Angular velocity | S1,S3,S4,S5,S6,S8,S9 | B | strong |
| Angus Ellis Taylor | S1,S8,S9 | Stub | strong |
| Angus MacFarlane-Grieve | S1 | C | strong |
| Angus Macintyre | S1,S8,S9 | Stub | strong |
| Anharmonicity | S3,S4 | Start | strong |
| Anil Kumar Gayen | S1,S8,S9 | Stub | strong |
| Animal Math | S1 | Start | strong |
| Animistic fallacy | S2,S9 | Stub | strong |
| Anioł Dowgird | S2 | Stub | strong |
| Anirban Pathak | S2,S3 | Start | strong |
| Anish Ghosh | S1,S9 | Start | strong |
| Anisohedral tiling | S1,S5,S6,S8 | C | strong |
| Anita Bahn | S2,S8 | Start | strong |
| Anita Burdman Feferman | S1,S8,S9 | Start | strong |
| Anita Schöbel | S1,S6 | Start | strong |
| Anja Schlömerkemper | S1 | Start | strong |
| Ankeny–Artin–Chowla congruence | S1,S5,S6,S8,S9 | Stub | strong |
| Ann Cartwright | S2,S8 | Stub | strong |
| Ann E. Bailie | S1 | C | strong |
| Ann E. Watkins | S1,S2,S8,S9 | Stub | strong |
| Ann M. Hardy | S2 | Start | strong |
| Ann S. Almgren | S1 | Start | strong |
| Anna Barbara Reinhart | S1 | Start | strong |
| Anna C. Gilbert | S1,S8 | Start | strong |
| Anna Cartan | S1,S9 | C | strong |
| Anna Erschler | S1,S8,S9 | Start | strong |
| Anna Fino | S1 | Stub | strong |
| Anna Jaśkiewicz | S1 | Start | strong |
| Anna Karenina principle | S2 | C | strong |
| Anna Lavinia Van Benschoten | S1 | Start | strong |
| Anna Lawniczak | S1,S6 | Start | strong |
| Anna Marciniak-Czochra | S1,S3 | Stub | strong |
| Anna Mazzucato | S1 | Start | strong |
| Anna Mullikin | S1,S9 | Start | strong |
| Anna Nevius | S2,S8 | Start | strong |
| Anna Panorska | S1 | Start | strong |
| Anna Parker Fessenden | S1 | Start | strong |
| Anna Romanowska | S1,S8,S9 | Start | strong |
| Anna Seigal | S1 | Start | strong |
| Anna Sfard | S1,S8,S9 | Start | strong |
| Anna Skripka | S1,S8 | Start | strong |
| Anna Stafford | S1 | Start | strong |
| Anna Wienhard | S1,S8,S9 | Start | strong |
| Anna Zdunik | S1 | Start | strong |
| Anna Zofia Krygowska | S1,S8 | Start | strong |
| Annales de l'Institut Fourier | S1,S8,S9 | Stub | strong |
| Annales scientifiques de l'École normale supérieure | S1,S5,S8,S9 | Stub | strong |
| Annalisa Buffa | S1,S6,S8,S9 | Start | strong |
| Annalisa Crannell | S1,S9 | C | strong |
| Annals of Applied Probability | S2,S8,S9 | Stub | strong |
| Annals of Mathematical Statistics | S2,S8,S9 | Stub | strong |
| Annals of Mathematics | S1,S8,S9 | C | strong |
| Annals of Mathematics Studies | S6,S9 | | S6 near |
| Annals of Probability | S2,S8,S9 | Stub | strong |
| Annals of Pure and Applied Logic | S1,S9 | Stub | strong |
| Annals of Statistics | S2,S8,S9 | Stub | strong |
| Annamalai Ramanathan | S1,S9 | Stub | strong |
| Anne Bennett Prize | S1,S9 | Start | strong |
| Anne Bosworth Focke | S1,S9 | Start | strong |
| Anne Boutet de Monvel | S1 | Start | strong |
| Anne Broadbent | S1 | Start | strong |
| Anne Canteaut | S2 | Start | strong |
| Anne Chao | S2,S8 | Start | strong |
| Anne Cobbe | S1 | C | strong |
| Anne Gelb | S1 | Start | strong |
| Anne Greenbaum | S1,S8,S9 | Start | strong |
| Anne Lemaître | S1 | Stub | strong |
| Anne M. Leggett | S1,S8,S9 | Start | strong |
| Anne Penfold Street | S1,S6,S9 | C | strong |
| Anne Polivka | S2 | Start | strong |
| Anne Sjerp Troelstra | S1,S5,S9 | Stub | strong |
| Anne Watson (mathematics educator) | S1 | Start | strong |
| Anne's theorem | S1,S5,S8,S9 | Start | strong |
| Anne-Laure Dalibard | S1 | Stub | strong |
| Anne-Sophie Kaloghiros | S1 | Start | strong |
| Anneli Lax | S1,S8,S9 | Start | strong |
| Annette Dobson | S1,S2,S8 | Start | strong |
| Annette Huber-Klawitter | S1,S8,S9 | Stub | strong |
| Annette Imhausen | S1,S8,S9 | Start | strong |
| Annette Werner | S1,S9 | Start | strong |
| Annibale Giordano | S1,S8 | C | strong |
| Annick Horiuchi | S1,S8,S9 | Start | strong |
| Annie Cuyt | S1,S8,S9 | Start | strong |
| Annie Dale Biddle Andrews | S1 | Start | strong |
| Annie Leuch-Reineck | S1 | C | strong |
| Annie MacKinnon | S1 | Start | strong |
| Annie Marie Garraway | S1 | C | strong |
| Annie Qu | S2,S8 | Start | strong |
| Annie Raoult | S1 | Start | strong |
| Annihilating polynomial | S1,S6,S9 | Stub | strong |
| Annihilator (ring theory) | S1,S4,S5,S6,S8,S9 | Start | strong |
| Annihilator method | S4,S9 | | strong |
| Annita Tuller | S1,S9 | Start | strong |
| ANNNI model | S3,S4,S6 | Start | strong |
| Annual Population Survey | S2 | Start | strong |
| Annuario Pontificio | S2 | Start | strong |
| Annuity | S1,S6,S8 | | strong |
| Annulus (mathematics) | S1,S4,S5,S6,S8,S9 | Start | strong |
| Annulus theorem | S1,S4,S5,S6,S8,S9 | Start | strong |
| Anomalous cancellation | S1,S5,S6 | Start | strong |
| Anomaly (natural sciences) | S2 | Start | strong |
| Anomaly (physics) | S3,S4,S5,S8 | Start | strong |
| Anomaly detection | S2,S3,S6,S9 | Start | strong |
| Anonym.OS | S2 | Start | strong |
| Anonymous Commentary on Plato's Theaetetus | S1 | B | strong |
| Anonymous P2P | S2 | C | strong |
| Anonymous remailer | S2,S6 | Start | strong |
| Anonymous veto network | S2,S6 | Start | strong |
| Anosov diffeomorphism | S3,S4,S5,S6,S8,S9 | B | strong |
| ANOVA gauge R&R | S2 | Start | strong |
| ANOVA on ranks | S2 | C | strong |
| ANOVA–simultaneous component analysis | S2,S6 | Start | strong |
| Ansatz | S1,S3,S5,S6,S8,S9 | Start | strong |
| Anscombe transform | S1,S2,S8,S9 | Start | strong |
| Anscombe's quartet | S1,S2,S9 | B | strong |
| Ansgar Beckermann | S2 | Stub | strong |
| Anshel–Anshel–Goldfeld key exchange | S2,S3,S6 | Stub | strong |
| Ant on a rubber rope | S1,S6 | C | strong |
| Antecedent (logic) | S2,S5,S8,S9 | Stub | strong |
| Antecedent variable | S2,S6 | Stub | strong |
| Anthemius of Tralles | S1,S5,S8,S9 | Start | strong |
| Anthony Bartholomay | S1 | Start | strong |
| Anthony C. Davison | S2,S8,S9 | Start | strong |
| Anthony Dumond Stanley | S1 | Start | strong |
| Anthony Hill (artist) | S1,S8,S9 | Start | strong |
| Anthony Hilton | S1,S9 | Start | strong |
| Anthony James Merrill Spencer | S1 | Stub | strong |
| Anthony Joseph Penico | S1 | Stub | strong |
| Anthony M. Bloch | S1 | Start | strong |
| Anthony W. Knapp | S1,S8,S9 | Stub | strong |
| Anthony Weston | S2 | C | strong |
| Anthropocentrism | S2 | C | strong |
| Anthropomorphic polygon | S1,S5 | Stub | strong |
| Anti-de Sitter space | S1,S3,S4,S5,S9 | C | strong |
| Anti-diagonal matrix | S1,S6,S9 | Start | strong |
| Anti-integrability | S1,S3,S6 | C | strong |
| Anti-Life Equation | S6 | | S6 near |
| Anti-psychologism | S2,S6,S8,S9 | Start | strong |
| Anti-unification | S3,S6,S9 | C | S6 near |
| Antichain | S1,S4,S5,S6,S8 | C | strong |
| Anticommutative property | S1,S4,S5 | Start | strong |
| Antiderivative | S1,S4,S5,S6,S8,S9 | C | strong |
| Antiderivative (complex analysis) | S1,S4,S6,S8,S9 | Start | strong |
| Antieigenvalue theory | S1,S6 | Stub | strong |
| Antifragile (book) | S2 | Start | strong |
| Antiholomorphic function | S1,S5,S6,S8,S9 | Stub | strong |
| Antihomomorphism | S1,S5,S6 | Start | strong |
| Antiisomorphism | S1,S6,S9 | Start | strong |
| Antikythera mechanism | S6,S9 | | S6 near |
| Antilimit | S1,S6 | Start | strong |
| Antilinear map | S1,S5,S6,S9 | Stub | strong |
| Antimagic square | S1,S5,S6 | Start | strong |
| Antimatroid | S1,S6,S9 | B | strong |
| Antinomy | S2,S8,S9 | Start | strong |
| Antiparallel lines | S1,S5,S6,S9 | Start | strong |
| Antiparallelogram | S1,S5,S8 | GA | strong |
| Antiphon (orator) | S1,S8,S9 | B | strong |
| Antipodal point | S1,S6,S8,S9 | Start | strong |
| Antipodes (sculpture) | S2 | Start | strong |
| Antiprism | S1,S5,S8,S9 | Start | strong |
| Antiprism graph | S1,S5,S6 | Start | strong |
| Antiquarian science books | S3,S6,S8 | List | S6 near |
| Antisymmetric relation | S1,S4,S5,S8 | Start | strong |
| Antisymmetric tensor | S1,S5,S6,S8 | Start | strong |
| Antithetic variates | S2,S4,S6,S8,S9 | Start | strong |
| Antivector | S1,S6 | Stub | strong |
| Antoine Arnauld | S2,S9 | Start | strong |
| Antoine Augustin Cournot | S1,S8,S9 | Start | strong |
| Antoine Deparcieux | S1 | Start | strong |
| Antoine Parent | S1 | Stub | strong |
| Antoine Song | S1,S8,S9 | Stub | strong |
| Antoine's necklace | S1,S5,S6,S8,S9 | Start | strong |
| Antoinette Tordesillas | S1 | C | strong |
| Anton Alekseev (mathematician) | S1,S8,S9 | Stub | strong |
| Anton Davidoglu | S1,S9 | Stub | strong |
| Anton Deusing | S1,S8 | Stub | strong |
| Anton Felkel | S1,S8,S9 | Stub | strong |
| Anton Formann | S2,S6 | Start | strong |
| Anton Kotzig | S1,S8,S9 | C | strong |
| Anton Leo Hickmann | S2 | Stub | strong |
| Anton von Braunmühl | S1,S8,S9 | Stub | strong |
| Anton Zorich | S1,S8,S9 | Stub | strong |
| Antonella Cupillari | S1,S9 | Start | strong |
| Antonella Grassi | S1,S5 | Start | strong |
| Antonella Zanna | S1 | Start | strong |
| Antoni Palluth | S2 | Stub | strong |
| Antoni Przeborski | S1 | Start | strong |
| Antoni Zygmund | S1,S8,S9 | C | strong |
| Antonia J. Jones | S1,S3 | Start | strong |
| Antonietta Mira | S2 | Start | strong |
| Antonio Ambrosetti | S1,S8,S9 | Start | strong |
| Antonio Auffinger | S1 | Start | strong |
| Antonio Cagnoli | S1,S9 | Stub | strong |
| Antonio Collalto (mathematician) | S1,S8 | Stub | strong |
| Antonio Fais | S1,S8 | Start | strong |
| Antonio Giorgilli | S1,S8 | Stub | strong |
| Antonio Ludeña | S1 | Stub | strong |
| Antonio Maria Bordoni | S1,S8,S9 | Stub | strong |
| Antonio Maria Lorgna | S1,S8,S9 | Start | strong |
| Antonio Millán-Puelles | S2 | Stub | strong |
| Antonio Monteiro (mathematician) | S1,S9 | Start | strong |
| Antonio Sangiovanni | S1 | Stub | strong |
| Antony Wassermann | S1,S5,S8,S9 | Start | strong |
| Antonín Václav Šourek | S1,S8 | Start | strong |
| Antoon Kolen | S1,S9 | Start | strong |
| Antti Kupiainen | S1,S3,S8,S9 | Start | strong |
| António Cabreira | S1 | C | strong |
| Anuar Dyusembaev | S1 | Stub | strong |
| Anubis (cipher) | S2 | Start | strong |
| Anupam Saikia | S1,S8 | Start | strong |
| Anuška Ferligoj | S1 | Start | strong |
| Any type | S1,S6 | C | strong |
| Anyon | S3,S4,S8,S9 | C | strong |
| Anyonic Lie algebra | S1,S6 | Stub | strong |
| Anytime A* | S1,S3,S5,S6 | Start | strong |
| Aoibhinn Ní Shúilleabháin | S1 | B | strong |
| AP Calculus | S6,S8,S9 | | S6 near |
| AP Precalculus | S1,S9 | Start | strong |
| AP Statistics | S1,S2,S6,S9 | GA | strong |
| Apala Majumdar | S1 | Start | strong |
| Aparna Higgins | S1,S6,S9 | Start | strong |
| Aparna V. Huzurbazar | S2,S8 | Start | strong |
| Apartness relation | S1,S5,S6,S9 | Start | strong |
| Apeirogon | S1,S5,S6,S8 | Start | strong |
| Apeirogonal antiprism | S1,S6,S8,S9 | Stub | strong |
| Apeirogonal hosohedron | S1,S6,S8,S9 | Stub | strong |
| Apeirogonal prism | S1,S6,S8,S9 | Stub | strong |
| Apeirogonal tiling | S6,S9 | | S6 near |
| Apeirophobia | S6 | | S6 near |
| Apeirotope | S1,S6,S8,S9 | List | strong |
| Aperiodic finite-state automaton | S1 | Stub | strong |
| Aperiodic graph | S1,S6 | Start | strong |
| Aperiodic semigroup | S1,S5,S6,S8,S9 | Stub | strong |
| Aperiodic set of prototiles | S1,S4,S6,S8 | Start | strong |
| Aperiodic tiling | S1,S5,S6,S8 | C | strong |
| Apex (geometry) | S1,S5,S8,S9 | Stub | strong |
| Apex graph | S1,S3,S5,S6,S8 | B | strong |
| Apodicticity | S2,S6,S9 | Stub | strong |
| Apodization | S1,S6 | Start | strong |
| Apollonian circles | S1,S5,S6,S8,S9 | Start | strong |
| Apollonian gasket | S3,S4,S5,S6,S8,S9 | B | strong |
| Apollonian network | S1,S5,S6,S8,S9 | B | strong |
| Apollonian sphere packing | S1,S3,S5,S6,S8,S9 | Stub | strong |
| Apollonius | S4 | | strong |
| Apollonius of Perga | S1,S5,S6,S8,S9 | C | strong |
| Apollonius point | S1,S5,S8 | Start | strong |
| Apollonius quadrilateral | S1,S8,S9 | Start | strong |
| Apollonius's theorem | S1,S4,S5,S6,S8,S9 | Start | strong |
| Apologetics | S2 | C | strong |
| Apoorva Khare | S1,S9 | Start | strong |
| Apophantic | S2 | Stub | strong |
| APOS Theory | S1,S6 | Stub | strong |
| Apostolos Doxiadis | S6,S8,S9 | | S6 near |
| Apotome (mathematics) | S1,S6 | Stub | strong |
| Apparent contour | S1 | Start | strong |
| Apparent magnitude | S3,S4,S5 | C | strong |
| Appeal to accomplishment | S2 | Stub | strong |
| Appeal to advantage | S2 | Stub | strong |
| Appeal to consequences | S2 | Start | strong |
| Appeal to emotion | S2 | C | strong |
| Appeal to fear | S2 | Start | strong |
| Appeal to flattery | S2 | Stub | strong |
| Appeal to loyalty | S2 | Stub | strong |
| Appeal to motive | S2,S9 | Stub | strong |
| Appeal to nature | S2 | C | strong |
| Appeal to novelty | S2 | Start | strong |
| Appeal to pity | S2 | Stub | strong |
| Appeal to probability | S2,S6 | Stub | strong |
| Appeal to ridicule | S2,S9 | Start | strong |
| Appeal to the law | S2,S9 | Stub | strong |
| Appeal to the stone | S2 | C | strong |
| Appeal to tradition | S2 | Start | strong |
| Appell | S4 | | strong |
| Appell sequence | S1,S5,S6,S8 | Start | strong |
| Appell series | S1,S4,S5,S6,S8,S9 | C | strong |
| Appell's equation of motion | S1,S3,S8 | C | strong |
| Appell–Humbert theorem | S1,S5,S6,S8,S9 | Start | strong |
| Appert topology | S1,S6,S8,S9 | Start | strong |
| Apple–FBI encryption dispute | S2,S6 | C | strong |
| Applications of dual quaternions to 2D geometry | S1,S5,S6,S8,S9 | Start | strong |
| Applications of randomness | S2,S6 | C | strong |
| Applications of sensitivity analysis in epidemiology | S6 | | S6 near |
| Applications of sensitivity analysis to model calibration | S6 | | S6 near |
| Applications of sensitivity analysis to multi-criteria decision making | S1,S6 | Stub | strong |
| Applied category theory | S1,S5,S6,S8,S9 | Start | strong |
| Applied Econometrics and International Development | S2 | Stub | strong |
| Applied element method | S1,S5,S6,S8 | Start | strong |
| Applied epistemology | S2 | C | strong |
| Applied mathematics | S1,S5,S6,S8,S9 | C | strong |
| Applied Mathematics Letters | S1,S9 | Stub | strong |
| Applied Mathematics Panel | S1,S2,S9 | Stub | strong |
| Applied Numerical Mathematics | S1 | Stub | strong |
| Applied probability | S1,S2,S5,S6,S9 | Start | strong |
| Applied Psychological Measurement | S2,S6 | Start | strong |
| Apportionment paradox | S4,S5,S6 | | strong |
| Approximate Bayesian computation | S1,S2,S8,S9 | B | strong |
| Approximate entropy | S2,S6 | Start | strong |
| Approximate fibration | S1,S6,S8,S9 | Stub | strong |
| Approximate identity | S1,S4,S5,S8,S9 | Start | strong |
| Approximate limit | S1,S4,S6,S9 | Start | strong |
| Approximate max-flow min-cut theorem | S3,S5,S6,S9 | C | S6 near |
| Approximate tangent space | S1,S5,S6 | Start | strong |
| Approximately continuous function | S1,S6 | Start | strong |
| Approximately finite-dimensional C*-algebra | S1,S4,S9 | Start | strong |
| Approximation | S1,S5,S6,S8,S9 | C | strong |
| Approximation algorithm | S1,S3,S4,S6,S8 | Start | strong |
| Approximation error | S1,S2,S5,S6,S8,S9 | C | strong |
| Approximation in algebraic groups | S1,S6,S9 | Start | strong |
| Approximation property | S1,S4,S6,S8,S9 | Start | strong |
| Approximation property (ring theory) | S1,S6 | Stub | strong |
| Approximation theory | S1,S4,S5,S6,S8,S9 | C | strong |
| Approximations of pi | S1,S4,S5,S6,S8,S9 | C | strong |
| APX | S1,S5,S6,S8 | Start | strong |
| Apéry's constant | S1,S5,S6,S8,S9 | Start | strong |
| Apéry's theorem | S1,S5,S6,S8,S9 | Start | strong |
| AQH share | S2 | Stub | strong |
| Aquifer test | S4 | | strong |
| Arab Institute for Training, Research and Statistics | S2,S6 | Stub | strong |
| Arabic numerals | S1,S5,S6,S8 | C | strong |
| Arago spot | S3,S4 | B | strong |
| Arakawa–Kaneko zeta function | S1,S5,S6,S8 | Start | strong |
| Arakelov theory | S1,S4,S5,S6,S8,S9 | Start | strong |
| Arakelyan | S4 | | strong |
| Aram Arutyunov | S1 | Stub | strong |
| Arantza Urkaregi | S2 | Start | strong |
| Arason invariant | S1,S5,S6 | Stub | strong |
| Aravind Srinivasan | S1,S3 | C | strong |
| Araz Aliyev | S2 | Start | strong |
| Arbelos | S1,S5,S8,S9 | Start | strong |
| Arbitrage | S4 | | strong |
| Arbitrage pricing theory | S4,S6 | | strong |
| Arbitrarily large | S1,S6,S8,S9 | Start | strong |
| Arbitrariness | S2,S6,S8 | Start | strong |
| Arbitrary-precision arithmetic | S1,S4,S6,S8 | Start | strong |
| Arboreal Galois representation | S1,S6 | Start | strong |
| Arborescence (graph theory) | S1,S5,S9 | Start | strong |
| Arboricity | S1,S5,S6 | Start | strong |
| Arc (projective geometry) | S1,S4,S6,S8,S9 | Start | strong |
| Arc diagram | S1 | GA | strong |
| Arc elasticity | S1 | Start | strong |
| Arc length | S1,S4,S5,S6,S8,S9 | B | strong |
| Arc routing | S1,S6 | | strong |
| Arc-length method | S1,S6 | C | strong |
| Arcadia (play) | S6 | | S6 near |
| Archaeocryptography | S2 | Start | strong |
| Archard equation | S6 | | S6 near |
| Archetypal analysis | S2,S3,S6 | Stub | strong |
| Archibald Read Richardson | S1,S9 | Stub | strong |
| Archie Blake (mathematician) | S1,S9 | Start | strong |
| Archie's law | S6 | | S6 near |
| Archimedean graph | S1,S5,S6,S9 | Stub | strong |
| Archimedean group | S1,S4,S6,S8 | C | strong |
| Archimedean ordered vector space | S1,S6,S9 | Start | strong |
| Archimedean property | S1,S4,S5,S6,S8,S9 | C | strong |
| Archimedean solid | S1,S4,S5,S8 | C | strong |
| Archimedean spiral | S1,S3,S5,S6,S8,S9 | C | strong |
| Archimedes | S1,S3,S5,S6,S8,S9 | FA | strong |
| Archimedes Palimpsest | S1,S8,S9 | B | strong |
| Archimedes' quadruplets | S1,S5,S8,S9 | Start | strong |
| Archimedes's cattle problem | S1,S5,S6,S8,S9 | C | strong |
| Architectonic and catoptric tessellation | S1,S6,S8,S9 | Start | strong |
| Architectural geometry | S1,S6 | Start | strong |
| Archive for Mathematical Logic | S6,S8,S9 | | S6 near |
| Archives of American Mathematics | S1,S9 | Start | strong |
| Arcsine distribution | S1,S2 | Start | strong |
| Arcsine laws (Wiener process) | S1,S2,S5,S6,S9 | Start | strong |
| Arctangent series | S1,S5,S6,S8,S9 | Start | strong |
| Arden's rule | S1,S3,S5,S6 | Start | strong |
| Area | S1,S5,S8 | B | strong |
| Area (graph drawing) | S1 | Start | strong |
| Area chart | S2,S9 | Stub | strong |
| Area compatibility factor | S2,S6 | Stub | strong |
| Area formula (geometric measure theory) | S1,S6 | Stub | strong |
| Area of a circle | S1,S5,S6,S8 | C | strong |
| Area of a triangle | S1,S4,S5 | C | strong |
| Area sampling frame | S2,S6 | Start | strong |
| Area theorem (conformal mapping) | S1,S4,S5,S6,S8,S9 | Start | strong |
| Arellano–Bond estimator | S2 | C | strong |
| AREMOS | S2 | Stub | strong |
| Arend Heyting | S1,S5,S6,S8,S9 | Stub | strong |
| Arens–Fort space | S4,S6,S8,S9 | | strong |
| Aretha Teckentrup | S1,S9 | Start | strong |
| Arf invariant | S1,S5,S6,S8 | Start | strong |
| Arf invariant of a knot | S1,S5,S8 | Start | strong |
| Arf ring | S1,S5,S6 | Stub | strong |
| Arf semigroup | S1,S5,S6 | Stub | strong |
| Arg max | S1,S5,S6,S8,S9 | Start | strong |
| Argand system | S1,S6 | Stub | strong |
| Argelia Velez-Rodriguez | S1 | Start | strong |
| Argentine Mathematical Union | S1,S8 | Start | strong |
| ARGH Power Ratings | S2 | Stub | strong |
| Argon2 | S2,S5,S9 | C | strong |
| Argument | S2,S8,S9 | C | strong |
| Argument (complex analysis) | S1,S4,S5,S6,S8,S9 | C | strong |
| Argument by example | S2 | Stub | strong |
| Argument from analogy | S2 | Start | strong |
| Argument from authority | S2 | B | strong |
| Argument from beauty | S2 | C | strong |
| Argument from consciousness | S2 | C | strong |
| Argument from degree | S2 | C | strong |
| Argument from desire | S2 | Start | strong |
| Argument from fallacy | S2 | C | strong |
| Argument from free will | S2 | Start | strong |
| Argument from ignorance | S2,S8 | C | strong |
| Argument from illusion | S2 | Start | strong |
| Argument from incredulity | S2 | Stub | strong |
| Argument from love | S2 | C | strong |
| Argument from marginal cases | S2 | C | strong |
| Argument from miracles | S2 | Start | strong |
| Argument from nonbelief | S2 | B | strong |
| Argument from poor design | S2 | Start | strong |
| Argument from religious experience | S2 | Start | strong |
| Argument from silence | S2 | Start | strong |
| Argument map | S2,S8,S9 | C | strong |
| Argument of a function | S1,S5,S6,S8,S9 | Stub | strong |
| Argument principle | S1,S4,S5,S6,S8,S9 | Start | strong |
| Argument shift method | S1 | Stub | strong |
| Argument to moderation | S2,S9 | Stub | strong |
| Argumentation scheme | S2 | C | strong |
| Argumentation theory | S2,S8 | C | strong |
| Argumentum a fortiori | S2,S9 | Start | strong |
| Argumentum ad baculum | S2,S9 | Stub | strong |
| Argumentum ad captandum | S2 | Stub | strong |
| Argumentum ad crumenam | S2,S9 | Stub | strong |
| Argumentum ad lazarum | S2,S9 | Stub | strong |
| Argumentum ad populum | S2,S9 | C | strong |
| Argumentum e contrario | S2 | | strong |
| Argument–deduction–proof distinctions | S2,S6 | Start | strong |
| ARGUS distribution | S1,S2,S3,S5 | Start | strong |
| Argüman | S2,S3 | Start | strong |
| ARIA (cipher) | S2,S5 | Start | strong |
| Ariadne's thread (logic) | S2,S3 | C | strong |
| Ariane Mézard | S1 | Start | strong |
| Arie Bialostocki | S1,S6,S8,S9 | Start | strong |
| Aristarchus of Samos | S1,S5,S8,S9 | B | strong |
| Aristarchus's inequality | S1,S5,S6,S8,S9 | Stub | strong |
| Aristocrat Cipher | S2,S6 | C | strong |
| Aristotelian realist philosophy of mathematics | S1,S6,S9 | C | strong |
| Aristotle | S1,S2,S3,S5,S8,S9 | GA | strong |
| Aristotle's wheel paradox | S2,S5,S6 | C | strong |
| Arithmaurel | S1 | Start | strong |
| Arithmetic | S1,S5,S6,S8 | GA | strong |
| Arithmetic (book) | S1 | Start | strong |
| Arithmetic and geometric Frobenius | S1,S6,S8,S9 | Stub | strong |
| Arithmetic billiards | S1,S6 | B | strong |
| Arithmetic coding | S4,S5,S6,S8 | | strong |
| Arithmetic combinatorics | S1,S5,S6,S8,S9 | Start | strong |
| Arithmetic derivative | S1,S5,S6,S9 | Start | strong |
| Arithmetic dynamics | S1,S4,S5,S6,S8,S9 | C | strong |
| Arithmetic for Parents | S1,S6 | Start | strong |
| Arithmetic Fuchsian group | S1,S6,S9 | C | strong |
| Arithmetic function | S1,S4,S5,S6,S8,S9 | B | strong |
| Arithmetic genus | S1,S4,S5,S6,S8,S9 | Start | strong |
| Arithmetic geometry | S1,S4,S5,S6,S8,S9 | Start | strong |
| Arithmetic group | S1,S4,S6,S8,S9 | Start | strong |
| Arithmetic hyperbolic 3-manifold | S1,S6,S9 | Start | strong |
| Arithmetic mean | S1,S2,S5,S6,S8 | C | strong |
| Arithmetic number | S1,S5,S6,S8,S9 | Start | strong |
| Arithmetic of abelian varieties | S1,S6,S8,S9 | Start | strong |
| Arithmetic progression | S1,S4,S5,S6,S8 | Start | strong |
| Arithmetic progression game | S1,S6 | Stub | strong |
| Arithmetic progression topologies | S1,S5,S6,S8,S9 | Start | strong |
| Arithmetic surface | S1,S6,S8,S9 | Start | strong |
| Arithmetic topology | S1,S5,S6,S8,S9 | Start | strong |
| Arithmetic variety | S1,S5,S6,S9 | Stub | strong |
| Arithmetic zeta function | S1,S5,S6,S8,S9 | Start | strong |
| Arithmetica Universalis | S1,S5,S8,S9 | Start | strong |
| Arithmetical hierarchy | S1,S4,S6,S8,S9 | B | strong |
| Arithmetical ring | S1,S6 | Stub | strong |
| Arithmetical set | S1,S6,S8,S9 | Start | strong |
| Arithmetices principia, nova methodo exposita | S1,S6,S8,S9 | Stub | strong |
| Arithmetico-geometric sequence | S1,S5,S6,S8,S9 | C | strong |
| Arithmetic–geometric mean | S1,S2,S4,S5,S6,S8,S9 | C | strong |
| Arithmetization of analysis | S1,S2,S6,S8,S9 | Start | strong |
| Arithmeum | S6 | | S6 near |
| Arithmologia | S1,S6 | C | strong |
| Arithmometer | S1 | C | strong |
| Arity | S1,S2,S3,S4,S5,S6,S8,S9 | C | strong |
| Arjen Lenstra | S1,S8,S9 | Start | strong |
| Arkady Onishchik | S1 | Start | strong |
| Arkiv för matematik, astronomi och fysik | S1,S3,S9 | Stub | strong |
| Arlington Hall | S2 | C | strong |
| Armand Borel | S1,S5,S8,S9 | Start | strong |
| Armenian eternity sign | S6 | | S6 near |
| Armenian Mathematical Union | S1,S8,S9 | Start | strong |
| Armitage–Doll multistage model of carcinogenesis | S2 | Stub | strong |
| Arnaud Beauville | S1,S5,S8,S9 | Stub | strong |
| Arnaud Chéritat | S1,S8,S9 | Start | strong |
| Arnaud Denjoy | S4,S8,S9 | | strong |
| Arne Beurling | S2,S8,S9 | Start | strong |
| Arne Meurman | S1,S9 | Stub | strong |
| Arno Donda | S2 | C | strong |
| Arno Kuijlaars | S1,S8 | Stub | strong |
| Arnold Cipher | S2 | Start | strong |
| Arnold conjecture | S1,S4,S5,S6,S8,S9 | Start | strong |
| Arnold diffusion | S1,S3,S4,S5,S6,S9 | Start | strong |
| Arnold Dresden | S1,S9 | Start | strong |
| Arnold Droz-Farny | S1 | Start | strong |
| Arnold Emch | S1,S8,S9 | Start | strong |
| Arnold Geulincx | S2 | C | strong |
| Arnold invariants | S1,S6,S9 | Start | strong |
| Arnold Mathematical Journal | S1,S8,S9 | Stub | strong |
| Arnold Oberschelp | S1 | Stub | strong |
| Arnold Ross | S1,S9 | GA | strong |
| Arnold Scholz | S1,S8,S9 | Stub | strong |
| Arnold Schönhage | S1,S8,S9 | Stub | strong |
| Arnold tongue | S1,S3,S4,S5,S6,S8 | C | strong |
| Arnold Walfisz | S1,S8,S9 | Stub | strong |
| Arnold's Problems | S1,S9 | Stub | strong |
| Arnold's spectral sequence | S1,S5,S6 | Stub | strong |
| Arnoldi iteration | S1,S4,S5,S6,S8,S9 | C | strong |
| Arnold–Kuiper–Massey theorem | S1,S9 | Start | strong |
| Aron Simis | S1 | Start | strong |
| Aronszajn line | S1,S6,S9 | Stub | strong |
| Aronszajn tree | S1,S4,S5,S6,S8,S9 | C | strong |
| Arrangement (space partition) | S1,S6 | Start | strong |
| Arrangement of hyperplanes | S1,S4,S5,S6,S8,S9 | C | strong |
| Arrangement of lines | S1,S6,S9 | GA | strong |
| Arrangement of pseudolines | S1 | Start | strong |
| Array controller based encryption | S2,S6 | Stub | strong |
| Arrhenius equation | S4,S5,S6,S8,S9 | | strong |
| Arrival theorem | S1,S2,S5,S6,S8,S9 | Start | strong |
| Arrow | S4,S9 | | strong |
| Arrow (symbol) | S1,S2,S6,S8,S9 | | strong |
| Arrow's impossibility theorem | S1,S5,S6,S8,S9 | B | strong |
| Arrowhead matrix | S1,S6,S9 | Start | strong |
| Arrow–Debreu model | S4,S6,S8 | | strong |
| Ars Conjectandi | S1,S2,S8,S9 | GA | strong |
| Ars Magna (Cardano book) | S1,S5,S6,S8,S9 | C | strong |
| Ars Mathematica Contemporanea | S1,S8,S9 | Stub | strong |
| Art gallery problem | S1,S4,S5,S6,S8,S9 | C | strong |
| Art Gallery Theorems and Algorithms | S1,S6,S8,S9 | C | strong |
| Artemas Martin | S1,S8,S9 | Start | strong |
| Arthur Bakker | S1 | Start | strong |
| Arthur Bartels | S1,S8,S9 | Stub | strong |
| Arthur Burks | S1,S6,S8,S9 | Start | strong |
| Arthur Byron Coble | S1,S8,S9 | C | strong |
| Arthur Cayley | S1,S5,S6,S8,S9 | B | strong |
| Arthur Edward Lyster | S1 | Start | strong |
| Arthur Edward Murphy | S2 | Stub | strong |
| Arthur Engel (mathematician) | S1,S9 | C | strong |
| Arthur Erdélyi | S1,S8,S9 | Start | strong |
| Arthur Everett Pitcher | S1 | Start | strong |
| Arthur F. Veinott | S1,S9 | Start | strong |
| Arthur Geoffrey Walker | S1,S3,S8,S9 | Stub | strong |
| Arthur Herbert Copeland | S1,S8,S9 | Start | strong |
| Arthur Hirsch | S1 | Start | strong |
| Arthur Hobbs (mathematician) | S1,S9 | Start | strong |
| Arthur J. Lohwater | S1,S9 | Stub | strong |
| Arthur Jolliffe | S1 | Start | strong |
| Arthur Lee Dixon | S1 | Start | strong |
| Arthur Matthews (mathematician) | S1 | Start | strong |
| Arthur Milgram | S1,S6,S9 | Start | strong |
| Arthur P. Dempster | S2,S8,S9 | Stub | strong |
| Arthur Prior | S2,S5,S9 | C | strong |
| Arthur Rosenthal | S1,S8,S9 | Stub | strong |
| Arthur Sard | S1 | Start | strong |
| Arthur Scherbius | S2 | Start | strong |
| Arthur Schopenhauer | S2,S5 | | strong |
| Arthur Stafford Hathaway | S1,S9 | Start | strong |
| Arthur Stanley Ramsey | S1 | Start | strong |
| Arthur T. Benjamin | S1,S6,S8,S9 | B | strong |
| Arthur W. Conway | S1,S8,S9 | Start | strong |
| Arthur's conjectures | S1,S6,S8,S9 | Stub | strong |
| Arthur–Merlin protocol | S1,S3,S4,S8 | Start | strong |
| Arthur–Selberg trace formula | S1,S4,S5,S6,S9 | Start | strong |
| Artificial general intelligence | S3,S6 | B | S6 near |
| Artificial intelligence content detection | S6 | | S6 near |
| Artificial neuron | S2 | Start | strong |
| Artificial precision | S1,S6,S8 | Stub | strong |
| Artificial wisdom | S6 | | S6 near |
| Artin algebra | S1,S5,S6,S8,S9 | Stub | strong |
| Artin approximation theorem | S1,S4,S5,S6,S8,S9 | Start | strong |
| Artin conductor | S1,S5,S6,S8,S9 | Start | strong |
| Artin L-function | S1,S5,S6,S8,S9 | Start | strong |
| Artin reciprocity | S1,S4,S5,S6,S8 | C | strong |
| Artin transfer (group theory) | S1,S5,S6,S9 | C | strong |
| Artin's conjecture on primitive roots | S1,S5,S6,S8,S9 | Start | strong |
| Artin's criterion | S1,S6,S9 | Stub | strong |
| Artin's theorem on induced characters | S1,S5,S6,S8,S9 | Stub | strong |
| Artinian ideal | S1,S5,S6,S8 | Stub | strong |
| Artinian module | S1,S4,S5,S6,S8 | Start | strong |
| Artinian ring | S1,S4,S5,S6,S8,S9 | Start | strong |
| Artin–Hasse exponential | S1,S5,S6,S8,S9 | C | strong |
| Artin–Mazur zeta function | S1,S3,S4,S5,S6,S8,S9 | Start | strong |
| Artin–Rees lemma | S1,S4,S5,S6,S8,S9 | Start | strong |
| Artin–Schreier curve | S1,S5 | Start | strong |
| Artin–Schreier theory | S1,S4,S5,S6,S8 | Start | strong |
| Artin–Tate lemma | S1,S4,S5,S6,S8,S9 | Start | strong |
| Artin–Tits group | S1,S4,S5,S6,S8 | C | strong |
| Artin–Verdier duality | S1,S5,S6,S8,S9 | C | strong |
| Artin–Zorn theorem | S1,S5,S6,S8,S9 | Stub | strong |
| Arto Salomaa | S1,S3,S8,S9 | Start | strong |
| Artstein's theorem | S3,S5,S6,S8 | Stub | S6 near |
| Artur Avila | S1,S8,S9 | Start | strong |
| Artur Oscar Lopes | S1 | Stub | strong |
| Arturo Reghini | S1,S8 | Start | strong |
| Arul Shankar | S1,S9 | Stub | strong |
| Aruoba-Diebold-Scotti Index | S2 | Start | strong |
| Arup Bose | S2,S8,S9 | Stub | strong |
| Arvid Gerhard Damm | S2 | Start | strong |
| Aryabhata | S1,S5,S8,S9 | C | strong |
| Aryeh Dvoretzky | S1,S2,S8,S9 | Start | strong |
| Aryness Joy Wickens | S2,S8,S9 | C | strong |
| Arzelà–Ascoli theorem | S1,S4,S5,S6,S8,S9 | Start | strong |
| As I was going to St Ives | S1,S5,S6 | C | strong |
| Asahi illusion | S1 | Start | strong |
| Asano contraction | S1,S6 | Start | strong |
| Ascendant subgroup | S1,S6,S8,S9 | Stub | strong |
| Ascending chain condition | S1,S4,S5,S6,S8,S9 | Start | strong |
| Ascending chain condition on principal ideals | S1,S6,S9 | C | strong |
| Ascher Wagner | S1 | Stub | strong |
| AsciiMath | S1,S6,S8,S9 | Start | strong |
| Asclepius of Tralles | S1,S8 | Stub | strong |
| Ascon (cipher) | S2,S5,S9 | C | strong |
| Asha Rao | S1 | Start | strong |
| Ashkan Nikeghbali | S1,S9 | Start | strong |
| Ashot Petrosian | S1 | Start | strong |
| Ashraf Huseynov | S1 | Stub | strong |
| Ashtekar variables | S3,S4,S8 | Start | strong |
| Askey scheme | S1,S4,S6,S9 | List | strong |
| Askey–Gasper inequality | S1,S4,S5,S6,S8,S9 | Start | strong |
| Askey–Wilson polynomials | S1,S4,S5,S6,S8,S9 | Stub | strong |
| Askold Khovanskii | S1,S8,S9 | Start | strong |
| Askold Vinogradov | S1 | Stub | strong |
| Aslak Tveito | S1,S3,S8 | Start | strong |
| Asma Hassannezhad | S1 | Stub | strong |
| Aspect ratio | S1,S6 | Start | strong |
| Aspherical space | S1,S6,S8,S9 | Start | strong |
| Asplund space | S1,S6,S8,S9 | Start | strong |
| ASReml | S1,S2 | Stub | strong |
| Assaf Naor | S1,S8,S9 | Start | strong |
| Assembly (realizability) | S1,S3,S6 | C | strong |
| Assembly map | S1,S4,S5,S6,S8 | Start | strong |
| Assertoricity | S2,S6 | Stub | strong |
| Assignment problem | S1,S4,S6,S8,S9 | Start | strong |
| Associahedron | S1,S4,S5,S8,S9 | Start | strong |
| Associate family | S1,S5,S6,S9 | Start | strong |
| Associated bundle | S1,S4,S5,S6,S8,S9 | Start | strong |
| Associated graded ring | S1,S4,S5,S6,S9 | Start | strong |
| Associated Legendre polynomials | S1,S3,S4,S5,S6,S8 | B | strong |
| Associated prime | S1,S4,S5,S6,S8,S9 | B | strong |
| Association fallacy | S2 | Start | strong |
| Association for Logic, Language and Information | S1,S2 | Stub | strong |
| Association for Symbolic Logic | S1,S2,S8,S9 | Start | strong |
| Association for Women in Mathematics | S1,S8,S9 | Start | strong |
| Association for Women in Mathematics Newsletter | S1 | Stub | strong |
| Association mapping | S2,S6 | Start | strong |
| Association of Christians in the Mathematical Sciences | S1 | Stub | strong |
| Association of Mathematics Teachers of India | S1 | Start | strong |
| Association of Statisticians of American Religious Bodies | S2 | Stub | strong |
| Association of Teachers of Mathematics | S1,S9 | Start | strong |
| Association rule learning | S2,S6 | B | strong |
| Association scheme | S1,S2,S4,S5,S6,S9 | C | strong |
| Associative algebra | S1,S4,S5,S6,S8,S9 | C | strong |
| Associative magic square | S1,S5,S6 | Start | strong |
| Associative property | S1,S4,S5,S6,S8,S9 | C | strong |
| Associativity equation | S1,S6 | B | strong |
| Associativity isomorphism | S1,S3,S5,S6 | Start | strong |
| Associator | S1,S4,S5,S8,S9 | Start | strong |
| Associação Brasileira de Estatística | S2 | Stub | strong |
| Assortative mixing | S1,S6,S9 | Stub | strong |
| Assouad dimension | S1,S6,S9 | Stub | strong |
| Assouad–Nagata dimension | S1,S6,S9 | Stub | strong |
| Assumed mean | S2,S6 | Start | strong |
| Assyr Abdulle | S1 | Start | strong |
| Asteroseismology | S3,S4 | C | strong |
| Asthana Kolahalam | S1,S6 | Start | strong |
| Astrid an Huef | S1 | Start | strong |
| Astroid | S1,S5,S8,S9 | Start | strong |
| Astrolabe | S1,S5 | C | strong |
| Astronomical coordinate systems | S4,S6 | | strong |
| Astronomical nutation | S4 | | strong |
| Astrostatistics | S2,S5,S6,S8 | Stub | strong |
| ASUI | S1 | Stub | strong |
| Asuman Aksoy | S1 | Start | strong |
| Asymmetric graph | S1,S5,S6,S9 | Start | strong |
| Asymmetric Laplace distribution | S1,S2,S5,S9 | Start | strong |
| Asymmetric norm | S1,S6,S9 | Start | strong |
| Asymmetric numeral systems | S1,S6,S8 | C | strong |
| Asymmetric relation | S1,S5,S6,S8,S9 | Start | strong |
| Asymmetric simple exclusion process | S4,S6,S9 | | strong |
| Asymptote | S1,S5,S6,S8,S9 | C | strong |
| Asymptotic analysis | S1,S4,S5,S6,S8,S9 | C | strong |
| Asymptotic computational complexity | S1,S3 | Start | strong |
| Asymptotic curve | S1,S5,S8,S9 | Start | strong |
| Asymptotic dimension | S1,S5,S6,S9 | Start | strong |
| Asymptotic distribution | S1,S2,S5,S6,S9 | C | strong |
| Asymptotic equipartition property | S1,S2,S4,S5,S6,S9 | B | strong |
| Asymptotic expansion | S1,S4,S5,S6,S8,S9 | Start | strong |
| Asymptotic freedom | S3,S4,S5,S6 | B | strong |
| Asymptotic gain model | S1,S3,S5,S6 | B | strong |
| Asymptotic geometry | S1,S6 | C | strong |
| Asymptotic homogenization | S1,S3,S4,S6,S8,S9 | Start | strong |
| Asymptotic safety | S3,S4,S6,S9 | B | strong |
| Asymptotic theory (statistics) | S2,S5,S6,S8,S9 | Start | strong |
| Asymptotically flat spacetime | S1,S3,S4,S5,S6,S8,S9 | B | strong |
| Asymptotology | S5,S6 | | S6 near |
| Asynchrony (game theory) | S6 | | S6 near |
| Atan2 | S1,S5,S8,S9 | C | strong |
| Atbash | S2,S5 | Stub | strong |
| Athanase Dupré | S1,S6 | Stub | strong |
| Athanasios Papoulis | S1,S8,S9 | Start | strong |
| Athanasius Kircher | S6,S9 | | S6 near |
| Athanasius Treweek | S2 | C | strong |
| Athanassios Fokas | S1,S8,S9 | Start | strong |
| Atherosclerosis Risk in Communities | S2 | Stub | strong |
| Athir al-Din al-Abhari | S1,S8,S9 | Start | strong |
| Atiyah algebroid | S1,S5,S9 | Start | strong |
| Atiyah conjecture | S1,S6,S8,S9 | Start | strong |
| Atiyah conjecture on configurations | S1,S5,S6,S8,S9 | Stub | strong |
| Atiyah–Bott fixed-point theorem | S1,S4,S5,S6,S8,S9 | Start | strong |
| Atiyah–Bott formula | S1,S5,S6,S9 | Stub | strong |
| Atiyah–Hirzebruch spectral sequence | S1,S4,S5,S6,S8 | Start | strong |
| Atiyah–Jones conjecture | S1,S5,S6,S9 | Stub | strong |
| Atiyah–Segal completion theorem | S1,S4,S5,S6,S8,S9 | Stub | strong |
| Atiyah–Singer index theorem | S1,S4,S5,S6,S8,S9 | B | strong |
| Atkinson index | S2,S4 | Start | strong |
| Atkinson's theorem | S1,S5,S6,S8,S9 | Start | strong |
| Atkinson–Mingarelli theorem | S1,S5,S6 | Start | strong |
| Atkin–Lehner theory | S1,S5,S6 | Start | strong |
| Atlantic City algorithm | S1,S2,S3,S5 | Stub | strong |
| Atlas (topology) | S1,S4,S5,S6,S8,S9 | C | strong |
| ATLAS of Finite Groups | S1,S6,S9 | Start | strong |
| Atlas of Lie groups and representations | S1,S6 | Stub | strong |
| Atle Selberg | S1,S5,S8,S9 | C | strong |
| Atmospheric escape | S4 | | strong |
| Atmospheric reanalysis | S2 | Start | strong |
| Atmospheric refraction | S3,S4 | C | strong |
| Atmospheric tide | S4 | | strong |
| Atom (measure theory) | S1,S4,S5,S6 | Start | strong |
| Atom (order theory) | S1,S4,S5,S6,S8 | Start | strong |
| Atomic domain | S1,S4,S6,S9 | Start | strong |
| Atomic formula | S1,S5,S6,S8,S9 | Start | strong |
| Atomic model (mathematical logic) | S1,S6,S8 | C | strong |
| Atomic number | S3,S5,S6,S9 | C | S6 near |
| Atomic sentence | S1,S2,S6,S8,S9 | Start | strong |
| Atoroidal | S1,S6,S9 | Stub | strong |
| ATS theorem | S1,S5,S6,S8,S9 | Start | strong |
| Atsuko Miyaji | S1,S3 | Start | strong |
| Attack model | S1,S2,S3,S6 | Start | strong |
| Attack rate | S2,S6 | Start | strong |
| Attacking Faulty Reasoning | S2,S8 | Start | strong |
| Attention (machine learning) | S2,S3 | C | strong |
| Attia Ashour | S1 | C | strong |
| Attic numerals | S1,S5,S6,S8,S9 | Start | strong |
| Attilio Palatini | S1,S8,S9 | Start | strong |
| Attractor | S1,S3,S4,S5,S6,S8 | C | strong |
| Attribute blocks | S1,S6,S9 | Stub | strong |
| Attribute grammar | S1,S3,S6 | Start | strong |
| Attribute-based encryption | S2,S6 | Start | strong |
| Attrition (research) | S2 | Stub | strong |
| Atwood machine | S3,S4 | Start | strong |
| Aubin–Lions lemma | S1,S4,S5,S6,S8 | Start | strong |
| Aubrey E. Landry | S1,S9 | Start | strong |
| Aubrey J. Kempner | S1,S9 | Stub | strong |
| Aubrey William Ingleton | S1,S8,S9 | Start | strong |
| Auction algorithm | S1,S5,S6 | Start | strong |
| Auction theory | S4,S5,S6 | | strong |
| Audit study | S2 | Start | strong |
| Audrey Terras | S1,S8,S9 | Start | strong |
| Auerbach's lemma | S1,S5,S6 | Start | strong |
| Augmentation (algebra) | S1,S6 | Stub | strong |
| Augmentation ideal | S1,S5,S6,S9 | Start | strong |
| Augmented Analytics | S2,S3,S6 | Start | strong |
| Augmented Backus–Naur form | S2,S6 | C | strong |
| Augmented Dickey–Fuller test | S2,S5 | Start | strong |
| Augmented dodecahedron | S1,S5,S8,S9 | Stub | strong |
| Augmented hexagonal prism | S1,S5,S8 | Stub | strong |
| Augmented Lagrangian method | S1,S3,S4,S6,S8 | Start | strong |
| Augmented matrix | S1,S4,S5,S6,S9 | C | strong |
| Augmented pentagonal prism | S1,S5,S8 | Stub | strong |
| Augmented Reality Sandtable | S6 | | S6 near |
| Augmented sphenocorona | S1,S5,S8,S9 | Start | strong |
| Augmented triangular prism | S1,S5,S8 | GA | strong |
| Augmented tridiminished icosahedron | S1,S5,S8,S9 | Stub | strong |
| Augmented truncated cube | S1,S5,S8,S9 | Stub | strong |
| Augmented truncated dodecahedron | S1,S5,S8,S9 | Stub | strong |
| Augmented truncated tetrahedron | S1,S5,S8,S9 | Stub | strong |
| August Adler | S1 | Stub | strong |
| August Beer | S1,S3,S8,S9 | Start | strong |
| August Ferdinand Möbius | S1,S5,S8,S9 | Start | strong |
| August Friedrich Müller | S2 | Start | strong |
| August Föppl | S1,S8 | Stub | strong |
| August Gutzmer | S1,S8 | Start | strong |
| August Leopold Crelle | S1,S9 | Stub | strong |
| August Löwe | S1 | Stub | strong |
| August Meitzen | S2 | Stub | strong |
| Auguste Dick | S1,S9 | Stub | strong |
| Auguste Kerckhoffs | S2 | Start | strong |
| Auguste-Savinien Leblond | S1 | Start | strong |
| Augustin Banyaga | S1,S9 | C | strong |
| Augustin Hirschvogel | S1 | Start | strong |
| Augustin Sesmat | S1 | Start | strong |
| Augustin-Louis Cauchy | S1,S3,S4,S5,S6,S8,S9 | B | strong |
| Augustus De Morgan | S1,S2,S5,S8,S9 | B | strong |
| Augustus Edward Hough Love | S1,S6,S8,S9 | Start | strong |
| Aumann | S4 | | strong |
| Aumann's agreement theorem | S2,S5,S6,S8,S9 | C | strong |
| Aurel Voss | S1,S9 | Stub | strong |
| Aurelio Baldor | S1 | Stub | strong |
| Aurifeuillean factorization | S1,S6,S9 | Start | strong |
| Auslander algebra | S1,S5,S6 | Stub | strong |
| Auslander–Buchsbaum formula | S1,S4,S5,S6,S9 | Stub | strong |
| Auslander–Buchsbaum theorem | S1,S4,S5,S6,S9 | Stub | strong |
| Auslander–Reiten theory | S1,S4,S5,S6,S8 | Start | strong |
| Austin moving-knife procedures | S1,S6 | Start | strong |
| Australian Aboriginal enumeration | S1,S6,S8 | Start | strong |
| Australian Bureau of Statistics | S2,S9 | B | strong |
| Australian Mathematical Sciences Institute | S1,S8,S9 | Start | strong |
| Australian Mathematical Society | S1,S8,S9 | | strong |
| Australian Polling Council | S2 | Start | strong |
| Australian Signals Directorate | S2 | C | strong |
| Australian Statistician | S1,S2 | Start | strong |
| Austrian Ludwig Wittgenstein Society | S2 | Start | strong |
| Austrian Society of Operations Research | S1,S2,S3 | Start | strong |
| Austrian Statistical Society | S2 | Stub | strong |
| Authenticated encryption | S2,S6 | C | strong |
| Authenticated Key Exchange | S2,S6 | Start | strong |
| Authentication | S2,S6 | C | strong |
| Authentication and Key Agreement | S2,S6 | Start | strong |
| Authenticator | S2 | B | strong |
| Authority distribution | S6 | | S6 near |
| Authorization certificate | S2,S6 | Start | strong |
| Autocorrelation | S2,S4,S5,S6,S8,S9 | C | strong |
| Autocovariance | S2,S5,S8,S9 | Start | strong |
| Autocrypt | S2 | Start | strong |
| Autoepistemic logic | S2,S6,S8,S9 | Start | strong |
| Autokey cipher | S2,S5,S6 | C | strong |
| Autologistic actor attribute models | S2,S6 | Start | strong |
| Automata theory | S2,S3,S4,S5,S8 | C | strong |
| Automated machine learning | S2 | C | strong |
| Automated planning and scheduling | S1,S3,S8 | C | strong |
| Automated reasoning | S2,S6,S9 | C | strong |
| Automated theorem proving | S1,S3,S6,S8,S9 | Start | strong |
| Automatic Certificate Management Environment | S2 | Start | strong |
| Automatic differentiation | S1,S4,S6,S8,S9 | C | strong |
| Automatic group | S1,S4,S6,S9 | Start | strong |
| Automatic item generation | S2,S6 | Start | strong |
| Automatic semigroup | S1,S6 | Start | strong |
| Automatic sequence | S1,S3,S6,S9 | Start | strong |
| Automatically Tuned Linear Algebra Software | S1,S6,S8,S9 | C | strong |
| Automedian triangle | S1,S8 | Start | strong |
| Automorphic factor | S1,S6 | Start | strong |
| Automorphic form | S1,S4,S5,S8 | C | strong |
| Automorphic function | S1,S5,S6,S9 | Stub | strong |
| Automorphic L-function | S1,S5,S6,S8,S9 | Start | strong |
| Automorphic number | S1,S5,S6,S8,S9 | Start | strong |
| Automorphism | S1,S4,S5,S6,S8,S9 | Start | strong |
| Automorphism group | S1,S4,S5,S6,S8 | Start | strong |
| Automorphism group of a free group | S1,S6,S9 | Start | strong |
| Automorphisms of the symmetric and alternating groups | S1,S6,S9 | Start | strong |
| Autonomous convergence theorem | S3,S5,S6,S8 | Start | S6 near |
| Autonomous system (mathematics) | S1,S3,S4,S5,S6,S8,S9 | Start | strong |
| Autoregressive conditional duration | S2,S6 | Stub | strong |
| Autoregressive conditional heteroskedasticity | S2,S4,S5,S8,S9 | C | strong |
| Autoregressive fractionally integrated moving average | S1,S2 | Start | strong |
| Autoregressive integrated moving average | S1,S2,S4,S8 | C | strong |
| Autoregressive model | S2,S4,S6,S8 | C | strong |
| Autoregressive moving-average model | S2,S4,S5,S8 | B | strong |
| Autumn Kent | S1 | Start | strong |
| Auxiliary function | S1,S6,S8,S9 | Start | strong |
| Auxiliary line | S1,S6 | Stub | strong |
| Auxiliary normed space | S1,S6,S8,S9 | C | strong |
| Auxiliary particle filter | S1,S2,S6,S8 | C | strong |
| AVA Radio Company | S2 | C | strong |
| Avadhesh Narayan Singh | S1,S8,S9 | Start | strong |
| Avalanche effect | S2,S3,S6 | Start | strong |
| Average | S1,S2,S5,S6,S8,S9 | C | strong |
| Average absolute deviation | S1,S2,S5,S8,S9 | C | strong |
| Average crossing number | S1,S6,S8 | Start | strong |
| Average earnings index (horse racing) | S2 | Start | strong |
| Average order of an arithmetic function | S1,S6,S9 | Start | strong |
| Average Service Availability Index | S1 | Stub | strong |
| Average treatment effect | S2,S8,S9 | Start | strong |
| Average variance extracted | S2 | Start | strong |
| Averaged one-dependence estimators | S2 | Stub | strong |
| Averaging argument | S1,S3,S6 | Start | strong |
| Averroes | S1,S2,S9 | GA | strong |
| Avi Wigderson | S1,S8,S9 | Start | strong |
| Avicenna | S2,S9 | B | strong |
| Aviezri Fraenkel | S1,S8,S9 | Stub | strong |
| Avner Ash | S1 | Stub | strong |
| Avner Friedman | S1,S5,S8,S9 | Start | strong |
| Avoider-Enforcer game | S1,S6 | Start | strong |
| Avraham Trahtman | S1,S8,S9 | Start | strong |
| Avrami equation | S3,S5,S6 | C | S6 near |
| AVT Statistical filtering algorithm | S2,S6 | Start | strong |
| AW*-algebra | S1,S5,S6,S8,S9 | Start | strong |
| Awele Maduemezia | S1,S3 | Start | strong |
| Awi Federgruen | S1 | Stub | strong |
| AWM-SIAM Sonia Kovalevsky Lecture | S1,S9 | Stub | strong |
| AWM–Microsoft Research Prize in Algebra and Number Theory | S6,S9 | | S6 near |
| AWPP | S1,S3,S5 | Stub | strong |
| Axel Johannes Malmquist | S1 | Stub | strong |
| Axel Sophus Guldberg | S1,S8 | Start | strong |
| Axel Thue | S1,S8,S9 | Stub | strong |
| Axial current | S1,S3,S5,S6 | C | strong |
| Axial precession | S3,S4,S8 | B | strong |
| Axial symmetry | S1,S6,S9 | Stub | strong |
| Axiality (geometry) | S1,S6 | Start | strong |
| Axiality and rhombicity | S1,S3,S6 | Start | strong |
| Axiom | S1,S2,S5,S6,S8,S9 | C | strong |
| Axiom A | S3,S4,S6 | Stub | strong |
| Axiom independence | S2 | Stub | strong |
| Axiom of adjunction | S1,S5,S6,S8,S9 | Stub | strong |
| Axiom of choice | S1,S4,S5,S8 | B | strong |
| Axiom of constructibility | S1,S2,S4,S5,S6,S8,S9 | Start | strong |
| Axiom of countability | S1,S6,S8,S9 | List | strong |
| Axiom of countable choice | S1,S5,S8 | Start | strong |
| Axiom of dependent choice | S1,S4,S5,S8 | Start | strong |
| Axiom of determinacy | S1,S4,S5,S6,S8,S9 | C | strong |
| Axiom of empty set | S1,S5,S6,S8,S9 | Start | strong |
| Axiom of extensionality | S1,S4,S5,S6,S8,S9 | Start | strong |
| Axiom of finite choice | S1,S6,S8 | Stub | strong |
| Axiom of global choice | S1,S5,S6,S8,S9 | Start | strong |
| Axiom of infinity | S1,S5,S6,S8,S9 | C | strong |
| Axiom of limitation of size | S1,S5,S6,S8,S9 | B | strong |
| Axiom of non-choice | S1,S6,S9 | Start | strong |
| Axiom of pairing | S1,S5,S6,S8,S9 | B | strong |
| Axiom of power set | S1,S5,S6,S8,S9 | Start | strong |
| Axiom of real determinacy | S1,S5,S6,S8,S9 | Stub | strong |
| Axiom of reducibility | S1,S5,S6,S9 | C | strong |
| Axiom of regularity | S1,S4,S5,S6,S8,S9 | B | strong |
| Axiom of union | S1,S5,S6,S8,S9 | Start | strong |
| Axiom schema | S1,S6,S8,S9 | Start | strong |
| Axiom schema of predicative separation | S1,S6,S8,S9 | Stub | strong |
| Axiom schema of replacement | S1,S4,S5,S6,S8,S9 | B | strong |
| Axiom schema of specification | S1,S5,S6,S8,S9 | B | strong |
| Axiomatic foundations of topological spaces | S1,S6,S9 | Start | strong |
| Axiomatic quantum field theory | S1,S3,S5,S8 | Start | strong |
| Axiomatic semantics | S1,S3,S6 | Stub | strong |
| Axiomatic system | S1,S2,S3,S5,S6,S8,S9 | C | strong |
| Axioms (journal) | S1 | Start | strong |
| Axis-aligned object | S6,S9 | | S6 near |
| Axis–angle representation | S1,S5,S6 | Start | strong |
| Axonometry | S1,S6,S9 | Start | strong |
| Ax–Grothendieck theorem | S1,S4,S5,S6,S8,S9 | Start | strong |
| Ax–Kochen theorem | S1,S4,S5,S6,S8,S9 | C | strong |
| Ayse Bilgin | S2 | Stub | strong |
| Azat Miftakhov | S1 | C | strong |
| Azimuth | S1,S5,S6 | C | strong |
| Azriel Lévy | S1,S5,S8,S9 | Stub | strong |
| Aztec diamond | S4,S5,S6,S8,S9 | | strong |
| Azuma's inequality | S1,S2,S5,S6,S8 | Start | strong |
| Azumaya algebra | S1,S4,S5,S6,S8,S9 | Start | strong |
| A¹ homotopy theory | S1,S4,S5,S6,S8,S9 | Start | strong |
| Ağrı Subregion | S2 | Stub | strong |
| A∞-operad | S1,S5,S6 | Start | strong |