Nodes at W0, stub

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

Ideas 4501–4650 of 6044.

Name	Kind	Subject
Intersection form	Definition	Manifolds and cell complexes
Functional equation of the Riemann zeta function	Theorem	Number theory
Discriminant of a number field	Definition	Number theory
Steinhaus theorem on regular methods	Theorem	Sequences, series, summability
Stopped process	Concept	Probability theory and stochastic processes
Heyting algebra	Concept	Order, lattices, ordered algebraic structures
Umbilical point	Definition	Differential geometry
Kripke semantics	Concept	Mathematical logic and foundations
Krylov–Bogolyubov averaging	Definition	Ordinary differential equations
Pfaffian	Concept	Linear and multilinear algebra; matrix theory
Partition of unity	Concept	Global analysis, analysis on manifolds
Essential spectrum	Definition	Operator theory
Poincaré homology sphere	Example	Manifolds and cell complexes
Heegner point	Definition	Number theory
Surgery theory	Definition	Manifolds and cell complexes
Lyapunov exponent	Concept	Ordinary differential equations
Connection on a principal bundle	Concept	Differential geometry
Residue field	Concept	Commutative algebra
Genus	Concept	Manifolds and cell complexes
Itô calculus	Definition	Probability theory and stochastic processes
Continuum	Concept	General topology
Reduced homology	Concept	Algebraic topology
Boolean model	Concept	Probability theory and stochastic processes
Moduli of algebraic curves	Concept	Algebraic geometry
Alexander subbase theorem	Theorem	General topology
Douglas' lemma	Lemma	Operator theory
Absorbing set	Concept	Functional analysis
Complete theory	Definition	Mathematical logic and foundations
Cyclotomic field	Concept	Number theory
Reflexive space	Concept	Functional analysis
Inner function	Concept	Functions of a complex variable
Eilenberg–Moore spectral sequence	Theorem	Algebraic topology
Resultant	Concept	Commutative algebra
Cantor function	Counterexample	Real functions
Group of Lie type	Concept	Group theory and generalizations
Completion of a normed space	Definition	Functional analysis
Completion is flat	Theorem	Commutative algebra
Topology generated by a family of seminorms	Definition	Functional analysis
Infinite Galois theory	Definition	Field theory and polynomials
Szemerédi–Trotter theorem	Theorem	Convex and discrete geometry
GCD domain	Definition	Commutative algebra
Infinitely divisible distribution	Definition	Probability theory and stochastic processes
Conway polynomial	Concept	Number theory
Riemann's existence theorem	Theorem	Functions of a complex variable
Dvoretzky's theorem	Theorem	Functional analysis
Hyperarithmetical theory	Concept	Mathematical logic and foundations
Torus knot	Concept	Manifolds and cell complexes
Completion of a ring	Definition	Commutative algebra
Symmetric function	Definition	Combinatorics
Kuratowski closure axioms	Concept	General topology
Hilbert transform	Concept	Integral transforms, operational calculus
Supermartingale	Concept	Probability theory and stochastic processes
Geodesic	Concept	Differential geometry
Commutative Gelfand–Naimark theorem	Theorem	Functional analysis
Resonance	Definition	Ordinary differential equations
Sierpiński space	Example	General topology
Cofinality	Definition	Mathematical logic and foundations
Specht module	Concept	Group theory and generalizations
Stopped process	Definition	Probability theory and stochastic processes
Švarc–Milnor lemma	Theorem	Group theory and generalizations
Fundamental group	Definition	Algebraic topology
Crossed product	Definition	Functional analysis
Brown–Peterson cohomology	Definition	Algebraic topology
Transcendence degree	Definition	Field theory and polynomials
Associated bundle	Concept	Algebraic topology
Inaccessible cardinal	Concept	Mathematical logic and foundations
Frobenius element	Definition	Number theory
Enumerative combinatorics	Definition	Combinatorics
Browder–Minty theorem	Theorem	Operator theory
Montel space	Concept	Functional analysis
Osculating circle	Concept	Differential geometry
Lefschetz duality	Theorem	Algebraic topology
Almost complex manifold	Definition	Differential geometry
Grothendieck inequality	Theorem	Functional analysis
Caristi fixed-point theorem	Theorem	Operator theory
Gaussian measure	Definition	Measure and integration
Real spectrum of self-adjoint operators	Theorem	Operator theory
Projective hierarchy	Definition	Mathematical logic and foundations
Closed operator	Definition	Operator theory
Complex measure	Concept	Measure and integration
de Branges space	Concept	Functional analysis
Adele ring	Definition	Number theory
Post's theorem	Theorem	Mathematical logic and foundations
Krein–Smulian theorem	Theorem	Functional analysis
Hyperfinite type II1 factor	Object	Functional analysis
Friedrichs extension	Definition	Operator theory
Matrix congruence	Definition	Linear and multilinear algebra; matrix theory
Symplectic integrator	Definition	Numerical analysis
Coupling from the past	Concept	Numerical analysis
Abelian differential	Concept	Functions of a complex variable
Gaussian measure	Concept	Measure and integration
Absolutely continuous measure	Concept	Measure and integration
Schwarz reflection principle	Theorem	Functions of a complex variable
Harnack's principle	Theorem	Potential theory
Measure space	Concept	Measure and integration
Character table	Concept	Group theory and generalizations
Higher-order logic	Concept	Mathematical logic and foundations
Hilbert's program	Problem	Mathematical logic and foundations
G2 manifold	Concept	Differential geometry
Additive combinatorics	Definition	Number theory
Nerve of a cover	Definition	Algebraic topology
Operator monotone function	Definition	Operator theory
Baire space of sequences	Object	General topology
Pseudo algebraically closed field	Definition	Field theory and polynomials
Elementary equivalence	Concept	Mathematical logic and foundations
Hankel operator	Concept	Operator theory
Tensor algebra	Concept	Linear and multilinear algebra; matrix theory
Surface	Definition	Manifolds and cell complexes
Kervaire invariant	Concept	Algebraic topology
Singular function	Concept	Real functions
Turing degree	Concept	Mathematical logic and foundations
Queueing theory	Concept	Probability theory and stochastic processes
Slice knot	Concept	Manifolds and cell complexes
Wirtinger presentation	Theorem	Manifolds and cell complexes
Weak topology	Concept	Functional analysis
Smooth four-dimensional Poincaré conjecture	Conjecture	Manifolds and cell complexes
Characterizations of Galois extensions	Theorem	Field theory and polynomials
Higman embedding theorem	Theorem	Group theory and generalizations
Group law on an elliptic curve	Concept	Algebraic geometry
Parallel transport	Definition	Differential geometry
Train track	Definition	Manifolds and cell complexes
Pitchfork bifurcation	Concept	Ordinary differential equations
Lorentz's characterization of almost convergence	Theorem	Sequences, series, summability
Local homomorphism	Concept	Commutative algebra
Positive operator	Definition	Operator theory
Nilpotent operator	Definition	Operator theory
Homotopy group	Concept	Algebraic topology
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
Tucker's lemma	Lemma	Combinatorics
Laplace–Beltrami operator	Definition	Global analysis, analysis on manifolds
Symmetric function	Concept	Combinatorics
Combinatorial design	Concept	Combinatorics
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
Motzkin number	Concept	Combinatorics
Serre fibration	Concept	Algebraic topology
Symmetric algebra	Concept	Linear and multilinear algebra; matrix theory
Word problem for groups	Problem	Group theory and generalizations
Muirhead's inequality	Theorem	Real functions
Discrete spectrum	Definition	Operator theory
Choquet theory	Definition	Functional analysis
Recurrence and transience of states	Concept	Probability theory and stochastic processes