Nodes at W0, stub

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

Ideas 2851–3000 of 12399.

Name	Kind	Subject
Intersection theory	Concept	Algebraic geometry
Legendre condition	Theorem	Calculus of variations and optimal control; optimization
Random group	Concept	Group theory and generalizations
Mazur–Ulam theorem	Theorem	Functional analysis
Hilbert symbol	Definition	Number theory
Kahan summation algorithm	Theorem	Numerical analysis
Block design	Concept	Combinatorics
Determinantal variety	Definition	Algebraic geometry
Siggers term	Definition	General algebraic systems
Discrete valuation ring	Definition	Commutative algebra
Eilenberg–Steenrod axioms	Definition	Algebraic topology
Legendre polynomials	Definition	Special functions
Character sum	Definition	Number theory
Markov random field	Definition	Statistics
Kolmogorov quotient	Definition	General topology
Spherical Bessel functions	Concept	Special functions
Turán's inequalities	Theorem	Special functions
Beltrami equation	Definition	Functions of a complex variable
Integral extension	Definition	Commutative algebra
Fresnel integrals	Definition	Special functions
Open subgroup	Definition	Topological groups, Lie groups
Isolated hypersurface singularity	Definition	Several complex variables and analytic spaces
Daniell integral	Concept	Measure and integration
Hom-set characterization of adjunctions	Theorem	Category theory; homological algebra
1 + 2 + 3 + 4 + ⋯	Example	Sequences, series, summability
Spectrum of an element	Definition	Functional analysis
Barbalat's lemma	Lemma	Ordinary differential equations
Siegel's theorem on integral points	Theorem	Number theory
Seminorm	Definition	Functional analysis
Weierstrass's counterexample to the Dirichlet principle	Counterexample	Calculus of variations and optimal control; optimization
Variational integrator	Concept	Numerical analysis
Rational map	Definition	Algebraic geometry
Compactly generated space	Concept	General topology
Regular function	Concept	Algebraic geometry
Artin–Tate lemma	Lemma	Commutative algebra
Commuting probability	Concept	Group theory and generalizations
Closed geodesic	Concept	Differential geometry
Exchangeable random variables	Concept	Probability theory and stochastic processes
Wavelet	Definition	Harmonic analysis on Euclidean spaces
Proof that subgroups of index two are normal	Proof	Group theory and generalizations
Sober space	Concept	General topology
Mehta integral	Theorem	Special functions
Whitney C-infinity topology	Definition	Global analysis, analysis on manifolds
Lewy's example	Counterexample	Partial differential equations
Signature operator	Concept	Global analysis, analysis on manifolds
Integro-differential equation	Definition	Integral equations
Area-minimizing current	Concept	Calculus of variations and optimal control; optimization
Group ring	Concept	Associative rings and algebras
Eigenfunction of an integral operator	Concept	Integral equations
Nerve of a cover	Concept	Algebraic topology
Borel hierarchy	Concept	Mathematical logic and foundations
Packing density	Concept	Convex and discrete geometry
Ext functor	Concept	Commutative algebra
Smoothing by convolution	Proposition	Integral transforms, operational calculus
Sequential probability ratio test	Definition	Statistics
Strichartz estimate	Theorem	Partial differential equations
Zaremba's punctured ball	Counterexample	Potential theory
Importance sampling	Theorem	Numerical analysis
Multidimensional transform	Concept	Integral transforms, operational calculus
Wavelet	Concept	Harmonic analysis on Euclidean spaces
S-finite measure	Definition	Measure and integration
Weak homotopy equivalence	Concept	Algebraic topology
Percolation theory	Definition	Probability theory and stochastic processes
Axiom of constructibility	Concept	Mathematical logic and foundations
Factor analysis	Concept	Statistics
Bornological space	Concept	Functional analysis
Weak and strong extremum	Definition	Calculus of variations and optimal control; optimization
Exponential map of a Lie group	Definition	Topological groups, Lie groups
Laguerre polynomials	Definition	Special functions
F-algebra	Concept	Category theory; homological algebra
Hankel functions	Definition	Special functions
Stein factorization	Theorem	Algebraic geometry
Steiner quasigroup	Example	Group theory and generalizations
Biproduct	Definition	Category theory; homological algebra
Buchberger's algorithm	Concept	Commutative algebra
Power of a test	Concept	Statistics
Fiber bundle	Definition	Algebraic topology
Eckmann–Hilton duality	Definition	Algebraic topology
Minkowski content	Definition	Measure and integration
Harish-Chandra embedding	Theorem	Several complex variables and analytic spaces
Perfect set	Definition	General topology
Conformal geometric algebra	Concept	Linear and multilinear algebra; matrix theory
Oppenheim conjecture	Theorem	Number theory
Essential submodule	Definition	Associative rings and algebras
Maschke's theorem	Theorem	Group theory and generalizations
The integers modulo the even integers	Example	Group theory and generalizations
Global attractor	Concept	Partial differential equations
Almost convergence	Definition	Sequences, series, summability
Jones polynomial	Concept	Manifolds and cell complexes
Recurrent point	Concept	Dynamical systems and ergodic theory
Nilpotency class	Concept	Group theory and generalizations
Portmanteau theorem	Theorem	Probability theory and stochastic processes
Spheroidal wave function	Definition	Special functions
Quadrature rule	Definition	Numerical analysis
Mumford–Shah functional	Example	Calculus of variations and optimal control; optimization
Sobol sequence	Object	Number theory
Nef line bundle	Definition	Algebraic geometry
Limit point compact space	Definition	General topology
Kardar–Parisi–Zhang equation	Definition	Probability theory and stochastic processes
Loewner order	Definition	Linear and multilinear algebra; matrix theory
Coplanarity	Concept	Geometry
Feldman–Hájek theorem	Theorem	Measure and integration
Limit set	Definition	Dynamical systems and ergodic theory
Fractional calculus	Definition	Real functions
Field of rational functions	Concept	Field theory and polynomials
Characteristic value of a kernel	Definition	Integral equations
Dirichlet eigenvalue	Concept	Partial differential equations
Rack and quandle	Definition	Manifolds and cell complexes
Grünwald–Letnikov derivative	Definition	Real functions
Birational geometry	Definition	Algebraic geometry
Nevanlinna–Pick interpolation	Theorem	Functions of a complex variable
Markov partition	Concept	Dynamical systems and ergodic theory
Particular point topology	Example	General topology
Fredholm series for the resolvent	Theorem	Integral equations
Buekenhout geometry	Concept	Geometry
Approximate derivative	Concept	Real functions
Log-normal distribution	Example	Probability theory and stochastic processes
Pi-system	Concept	Measure and integration
Lichnerowicz formula	Theorem	Differential geometry
Matroid minor	Concept	Combinatorics
Dehn–Sommerville equations	Theorem	Convex and discrete geometry
Tate algebra	Definition	Several complex variables and analytic spaces
Graded poset	Definition	Order, lattices, ordered algebraic structures
Kuranishi structure	Concept	Differential geometry
Harmonic at a point	Definition	Potential theory
Céa's lemma	Lemma	Numerical analysis
Stieltjes function	Definition	Real functions
Nonexpansive map	Definition	Operator theory
Weak operator topology	Concept	Operator theory
Cayley–Abels graph	Definition	Topological groups, Lie groups
Bohr compactification	Definition	Topological groups, Lie groups
Finite model theory	Concept	Mathematical logic and foundations
Poincaré–Hopf theorem	Theorem	Manifolds and cell complexes
Arithmetic group	Concept	Group theory and generalizations
Darboux integral	Definition	Real functions
Association scheme	Definition	Combinatorics
Approximately finite-dimensional C*-algebra	Concept	Functional analysis
Descriptive geometry	Concept	Geometry
Iwasawa decomposition of a Lie group	Theorem	Topological groups, Lie groups
Chu–Vandermonde identity	Theorem	Special functions
Universal property of the free magma	Proposition	General algebraic systems
Starred transform	Concept	Integral transforms, operational calculus
Subvariety	Concept	General algebraic systems
Capacity of a set	Concept	Potential theory
Modular lambda function	Object	Number theory
Ore localization	Definition	Associative rings and algebras
Monotone likelihood ratio	Concept	Statistics
Newtonian potential	Definition	Potential theory
Affine differential geometry	Definition	Differential geometry
Benedicks' theorem	Theorem	Harmonic analysis on Euclidean spaces