Nodes at W1, stated

The main section of the kind, a source with a locator, and a body that passes the rules B01 to B03.

Ideas 1201–1350 of 1702.

Name	Kind	Subject
Uniform continuity	Definition	Real functions
Darboux's theorem	Theorem	Real functions
Statistic	Concept	Statistics
Permutation matrix	Definition	Linear and multilinear algebra; matrix theory
Regular graph	Concept	Combinatorics
Nilpotent group	Concept	Group theory and generalizations
Conjugacy class	Definition	Group theory and generalizations
Orientation of a real vector space	Definition	Linear and multilinear algebra; matrix theory
Outer automorphism group	Concept	Group theory and generalizations
Polynomial ring	Definition	Commutative algebra
Diagonal matrix	Definition	Linear and multilinear algebra; matrix theory
Convergence in probability	Concept	Probability theory and stochastic processes
Field	Definition	Field theory and polynomials
Uniqueness quantifier	Concept	Mathematical logic and foundations
Probability distribution	Definition	Probability theory and stochastic processes
Contour line	Concept	Real functions
Characteristic equation	Definition	Ordinary differential equations
Sequence	Definition	Sequences, series, summability
Closure	Concept	General topology
Alternating series	Concept	Sequences, series, summability
Peano axioms	Concept	Mathematical logic and foundations
Gauss's lemma	Theorem	Commutative algebra
Removable discontinuity	Definition	Real functions
Stochastic process	Concept	Probability theory and stochastic processes
Predicate	Concept	Mathematical logic and foundations
Differential form	Definition	Global analysis, analysis on manifolds
Affine map	Definition	Geometry
Orientation of a real vector space	Concept	Linear and multilinear algebra; matrix theory
Cardinal number	Definition	Mathematical logic and foundations
Element	Concept	Mathematical logic and foundations
Product of rings	Concept	Associative rings and algebras
Riemann integral	Definition	Real functions
Orthocentre	Definition	Geometry
Galois extension	Concept	Field theory and polynomials
Euclidean vector	Concept	Geometry
Constructible number	Concept	Field theory and polynomials
Sample mean	Definition	Statistics
Lipschitz continuity	Definition	Real functions
Ratio test	Theorem	Sequences, series, summability
Compact space	Definition	General topology
Positive definite matrix	Definition	Linear and multilinear algebra; matrix theory
Linear differential equation of order n	Concept	Ordinary differential equations
Orthogonal matrix	Definition	Linear and multilinear algebra; matrix theory
Residue class	Definition	Number theory
Homeomorphism	Concept	General topology
Partial order	Concept	Order, lattices, ordered algebraic structures
Distance in a graph	Concept	Combinatorics
Integral domain	Concept	Commutative algebra
Homothety	Definition	Geometry
Inner product space	Concept	Linear and multilinear algebra; matrix theory
Simply connected domain	Concept	Algebraic topology
Tangent–secant theorem	Theorem	Geometry
Presentation of a group	Definition	Group theory and generalizations
Cauchy sequence	Definition	Sequences, series, summability
Fermat number	Definition	Number theory
Fubini's theorem	Theorem	Real functions
T0 space	Definition	General topology
Almost surely	Definition	Probability theory and stochastic processes
Monoid	Definition	Group theory and generalizations
Directed graph	Definition	Combinatorics
Translation	Definition	Geometry
Subsequence	Definition	Sequences, series, summability
Linear Diophantine equation	Concept	Number theory
Adjoint of a linear map	Concept	Linear and multilinear algebra; matrix theory
Unitary group	Object	Linear and multilinear algebra; matrix theory
Bernoulli number	Definition	Number theory
Quadratic form	Concept	Linear and multilinear algebra; matrix theory
Bessel's inequality	Theorem	Functional analysis
Cyclic quadrilateral	Concept	Geometry
Boolean ring	Concept	Order, lattices, ordered algebraic structures
Ordinal number	Definition	Mathematical logic and foundations
Chi-squared distribution	Definition	Probability theory and stochastic processes
Cauchy–Schwarz inequality	Theorem	Linear and multilinear algebra; matrix theory
Subgroup generated by a subset	Definition	Group theory and generalizations
Torsion subgroup	Definition	Group theory and generalizations
Projection	Definition	Linear and multilinear algebra; matrix theory
Linear map	Definition	Linear and multilinear algebra; matrix theory
Symmetric group	Definition	Group theory and generalizations
Totally disconnected space	Concept	General topology
Polar coordinates	Definition	Geometry
Circumcircle	Definition	Geometry
Complement	Concept	Mathematical logic and foundations
LU decomposition	Concept	Linear and multilinear algebra; matrix theory
Slope field	Definition	Ordinary differential equations
Sum of subspaces	Definition	Linear and multilinear algebra; matrix theory
Exponential function	Definition	Special functions
Inner automorphism	Concept	Group theory and generalizations
Complement graph	Definition	Combinatorics
Positive definite quadratic form	Concept	Linear and multilinear algebra; matrix theory
Subgroup generated by a subset	Concept	Group theory and generalizations
Identity element	Definition	General algebraic systems
Prime-counting function	Concept	Number theory
Wedderburn's little theorem	Theorem	Field theory and polynomials
Linear form	Definition	Linear and multilinear algebra; matrix theory
Cauchy product	Concept	Sequences, series, summability
Gaussian prime	Concept	Number theory
Converse	Definition	Mathematical logic and foundations
Spherical coordinates	Definition	Geometry
Probability theory	Concept	Probability theory and stochastic processes
Cartesian coordinate system	Concept	Geometry
Jensen's inequality	Theorem	Real functions
Completely multiplicative function	Concept	Number theory
Preorder	Definition	Order, lattices, ordered algebraic structures
Chain rule	Theorem	Real functions
Lucas's theorem	Theorem	Number theory
Big O notation	Definition	Approximations and expansions
Law of excluded middle	Theorem	Mathematical logic and foundations
Separable polynomial	Concept	Field theory and polynomials
Interior	Concept	General topology
Principal ideal domain	Definition	Commutative algebra
Hausdorff space	Concept	General topology
Kernel of a linear map	Concept	Linear and multilinear algebra; matrix theory
Surface area	Concept	Measure and integration
Continuous linear map	Definition	Operator theory
Abel's theorem	Theorem	Sequences, series, summability
Spanning tree	Concept	Combinatorics
Dot product	Concept	Linear and multilinear algebra; matrix theory
Upper bound	Concept	Order, lattices, ordered algebraic structures
Root of unity	Definition	Number theory
Confidence interval	Concept	Statistics
Midpoint	Concept	Geometry
Indeterminate form	Concept	Real functions
Centre of a group	Definition	Group theory and generalizations
Hartman–Grobman theorem	Theorem	Dynamical systems and ergodic theory
Orthonormal basis	Concept	Linear and multilinear algebra; matrix theory
Correspondence theorem	Theorem	Group theory and generalizations
Generalised eigenvector	Definition	Linear and multilinear algebra; matrix theory
Perfect number	Definition	Number theory
Multiplicative order	Definition	Number theory
Golden ratio	Object	Number theory
Hessian matrix	Definition	Real functions
Gradient theorem	Theorem	Real functions
Minor	Definition	Linear and multilinear algebra; matrix theory
Polynomial ring	Concept	Commutative algebra
Dihedral angle	Definition	Geometry
Multilinear map	Definition	Linear and multilinear algebra; matrix theory
Cross product	Definition	Linear and multilinear algebra; matrix theory
Order of a group	Definition	Group theory and generalizations
Countably infinite set	Definition	Mathematical logic and foundations
Möbius transformation	Concept	Functions of a complex variable
Equivalence relation	Definition	Mathematical logic and foundations
Set	Definition	Mathematical logic and foundations
Falling factorial	Concept	Combinatorics
Prime number	Definition	Number theory
Erdős–Szekeres theorem	Theorem	Combinatorics
Bijective function	Definition	Mathematical logic and foundations
Primitive polynomial	Definition	Commutative algebra
Hypergeometric distribution	Definition	Probability theory and stochastic processes
Quadratic residue	Definition	Number theory
Parallelepiped	Concept	Geometry