Nodes at W0, stub

A tag, a kind, a name, an inventory row, and a same_as or a source.

Ideas 7501–7650 of 10216.

Name	Kind	Subject
Nilpotent operator	Definition	Operator theory
Homotopy group	Concept	Algebraic topology
Sphere	Concept	Geometry
Hypercube	Example	Convex and discrete geometry
Group homology	Definition	Group theory and generalizations
S-finite measure	Concept	Measure and integration
Developable surface	Definition	Differential geometry
Turing reduction	Concept	Mathematical logic and foundations
Mean curvature	Concept	Differential geometry
Löwner's theorem	Theorem	Operator theory
Symmetric space	Concept	Differential geometry
Chern class	Concept	Algebraic geometry
Tucker's lemma	Lemma	Combinatorics
Laplace–Beltrami operator	Definition	Global analysis, analysis on manifolds
Symmetric function	Concept	Combinatorics
Combinatorial design	Concept	Combinatorics
Contingency table	Concept	Statistics
Frobenius reciprocity	Theorem	Group theory and generalizations
Natural deduction	Definition	Mathematical logic and foundations
Minkowski functional	Concept	Functional analysis
Double series	Concept	Sequences, series, summability
Intrinsic volume	Definition	Convex and discrete geometry
Motzkin number	Concept	Combinatorics
Serre fibration	Concept	Algebraic topology
Pseudo-element	Definition	Category theory; homological algebra
Haar system	Definition	Harmonic analysis on Euclidean spaces
Symmetric algebra	Concept	Linear and multilinear algebra; matrix theory
Word problem for groups	Problem	Group theory and generalizations
Fractional factorial design	Concept	Statistics
Muirhead's inequality	Theorem	Real functions
Discrete spectrum	Definition	Operator theory
F-distribution	Concept	Statistics
Simple polytope	Definition	Convex and discrete geometry
Choquet theory	Definition	Functional analysis
Well-quasi-ordering	Definition	Order, lattices, ordered algebraic structures
Recurrence and transience of states	Concept	Probability theory and stochastic processes
Comma category	Concept	Category theory; homological algebra
Bessel's integral	Proposition	Special functions
Derived category	Definition	Category theory; homological algebra
Multiplicative set	Definition	Commutative algebra
Skew group ring	Concept	Associative rings and algebras
Sierpiński carpet	Example	General topology
Inverse problem	Concept	Partial differential equations
Levi-Civita connection	Definition	Differential geometry
Generalized polygon	Concept	Geometry
Digamma function	Definition	Special functions
State on a C*-algebra	Definition	Functional analysis
Convergence of an infinite product	Concept	Sequences, series, summability
Commutative algebra over a ring	Definition	Commutative algebra
Residual set	Definition	General topology
Shelf	Concept	Group theory and generalizations
CW approximation	Theorem	Algebraic topology
Laguerre–Pólya class	Definition	Functions of a complex variable
Bishop–Phelps theorem	Theorem	Functional analysis
Fast wavelet transform	Concept	Numerical analysis
Gateaux derivative	Definition	Functional analysis
Particular values of the gamma function	Example	Special functions
Hedetniemi's conjecture	Counterexample	Combinatorics
Projection body	Definition	Convex and discrete geometry
Absolute summability	Definition	Sequences, series, summability
Moving-average model	Concept	Statistics
Dürer's conjecture	Conjecture	Convex and discrete geometry
Torsion-free group	Concept	Group theory and generalizations
Axiom of determinacy	Concept	Mathematical logic and foundations
Wave front set	Definition	Partial differential equations
Complete statistic	Definition	Statistics
Lattice polytope	Definition	Convex and discrete geometry
Content	Concept	Measure and integration
Horvitz–Thompson estimator	Definition	Statistics
Algebra of sets	Concept	Measure and integration
Contraction semigroup	Definition	Operator theory
Modular function	Definition	Topological groups, Lie groups
Bruhat decomposition of a Lie group	Theorem	Topological groups, Lie groups
Antipode	Concept	Associative rings and algebras
Homotopy group	Definition	Algebraic topology
Amenable group	Definition	Abstract harmonic analysis
Kneser's theorem on solution sets	Theorem	Ordinary differential equations
Quasicircle	Definition	Functions of a complex variable
Mahlo cardinal	Definition	Mathematical logic and foundations
Absolute Galois group	Concept	Field theory and polynomials
Universal Horn class	Definition	Mathematical logic and foundations
Christodoulou–Klainerman stability of Minkowski space	Theorem	Relativity and gravitational theory
Motzkin number	Definition	Combinatorics
Hopfian group	Concept	Group theory and generalizations
Regular conditional probability	Concept	Probability theory and stochastic processes
Ax–Kochen theorem	Theorem	Field theory and polynomials
Measurable function	Definition	Measure and integration
Absorbing element	Concept	General algebraic systems
Lifting idempotents	Definition	Associative rings and algebras
M. Riesz theorem on the Hilbert transform	Theorem	Harmonic analysis on Euclidean spaces
Short-time Fourier transform	Definition	Harmonic analysis on Euclidean spaces
Lie derivative	Concept	Differential geometry
Discrete spectrum	Concept	Operator theory
Hausdorff summation	Concept	Sequences, series, summability
Uniform polytope	Definition	Geometry
Similarity transformation	Definition	Geometry
Identity	Concept	General algebraic systems
Linear regression	Definition	Statistics
Semihereditary ring	Definition	Associative rings and algebras
Nielsen–Thurston classification	Theorem	Manifolds and cell complexes
Non-measurable set	Concept	Measure and integration
Lauricella hypergeometric series	Definition	Special functions
Optimal experimental design	Concept	Statistics
Valuation on convex bodies	Definition	Convex and discrete geometry
Sub-Gaussian distribution	Definition	Probability theory and stochastic processes
Petersen's theorem	Theorem	Combinatorics
q-derivative	Concept	Combinatorics
Littlewood subordination theorem	Theorem	Functions of a complex variable
Crossed product algebra	Definition	Associative rings and algebras
Quasisymmetric map	Definition	Functions of a complex variable
Pentagonal number theorem	Theorem	Number theory
Noetherian module	Definition	Commutative algebra
Airy equation	Example	Ordinary differential equations
k-means clustering	Definition	Statistics
Strongly minimal theory	Concept	Mathematical logic and foundations
Stratified sampling	Concept	Statistics
Hardy space	Concept	Functions of a complex variable
Liouville–Arnold theorem	Theorem	Dynamical systems and ergodic theory
Simson line	Concept	Geometry
Faithful module	Definition	Associative rings and algebras
Slice knot	Definition	Manifolds and cell complexes
Krull dimension of a noncommutative ring	Concept	Associative rings and algebras
Bayes estimator	Concept	Statistics
Butterfly effect	Definition	Dynamical systems and ergodic theory
Horocycle	Definition	Geometry
Computable set	Concept	Mathematical logic and foundations
Cole–Hopf transformation	Definition	Partial differential equations
Calderón–Zygmund kernel	Definition	Harmonic analysis on Euclidean spaces
Cauchy–Riemann operator	Concept	Several complex variables and analytic spaces
Reproducing kernel Hilbert space	Definition	Functional analysis
Quadratic transformations of hypergeometric functions	Theorem	Special functions
Dixon elliptic functions	Concept	Special functions
Real algebraic geometry	Concept	Algebraic geometry
Hankel matrix	Concept	Linear and multilinear algebra; matrix theory
Calculus of variations	Concept	Calculus of variations and optimal control; optimization
Sheaf cohomology	Concept	Algebraic geometry
Symplectic vector space	Concept	Linear and multilinear algebra; matrix theory
Classical group	Definition	Group theory and generalizations
Kullback–Leibler divergence	Concept	Information and communication theory, circuits
Equivalence of Boolean rings and Boolean algebras	Theorem	Order, lattices, ordered algebraic structures
Natural boundary	Concept	Functions of a complex variable
Infinitary logic	Concept	Mathematical logic and foundations
von Neumann mean ergodic theorem	Theorem	Operator theory
Pro-object	Definition	Category theory; homological algebra
Binary quadratic form	Definition	Number theory
Measure	Concept	Measure and integration
Separation of variables	Definition	Ordinary differential equations
Playfair's axiom	Fact	Geometry
U-statistic	Definition	Statistics
Biharmonic equation	Definition	Potential theory