Nodes at W0, stub

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

Ideas 8401–8550 of 12399.

Name	Kind	Subject
Nilpotent ideal	Definition	Associative rings and algebras
Rarefaction wave	Definition	Partial differential equations
Schwarz triangle function	Definition	Special functions
Kovacic's algorithm	Definition	Ordinary differential equations
Danzer set	Problem	Convex and discrete geometry
Density of the graph of a discontinuous additive function	Proposition	Difference and functional equations
Blaschke–Santaló inequality	Theorem	Convex and discrete geometry
Tightness of measures	Concept	Probability theory and stochastic processes
Group algebra	Concept	Group theory and generalizations
Large deviations theory	Definition	Probability theory and stochastic processes
Rössler attractor	Example	Ordinary differential equations
Fundamental theorem of the calculus of finite differences	Theorem	Difference and functional equations
Simpson's rule	Concept	Numerical analysis
Helmholtz equation	Concept	Partial differential equations
Cluster analysis	Definition	Statistics
Trigonometric series	Definition	Harmonic analysis on Euclidean spaces
Group isomorphism problem	Problem	Group theory and generalizations
Galois group of a finite field extension	Theorem	Field theory and polynomials
Weinstein conjecture	Conjecture	Differential geometry
Percolation threshold	Concept	Probability theory and stochastic processes
Function approximation	Definition	Approximations and expansions
Picard's criterion for first-kind equations	Theorem	Integral equations
Conservative system	Concept	Dynamical systems and ergodic theory
Hyperbolic set	Concept	Dynamical systems and ergodic theory
Autoregressive conditional heteroskedasticity	Concept	Statistics
Cartan–Serre finiteness theorem	Theorem	Several complex variables and analytic spaces
Height of a poset	Concept	Order, lattices, ordered algebraic structures
Oscillatory solution of a difference equation	Definition	Difference and functional equations
Perron method	Definition	Potential theory
Pólya enumeration theorem	Theorem	Combinatorics
Simple Lie group	Definition	Topological groups, Lie groups
Bernstein–Doetsch theorem	Theorem	Real functions
Genus–degree formula	Theorem	Algebraic geometry
Parallelohedron	Concept	Convex and discrete geometry
Galerkin method	Definition	Numerical analysis
Bounded inverse theorem	Theorem	Functional analysis
Baer's criterion	Theorem	Associative rings and algebras
Projective dimension	Concept	Commutative algebra
Wiener–Hopf method	Definition	Integral equations
Filter	Definition	General topology
Circumsphere	Concept	Geometry
Generalized method of moments	Definition	Statistics
Bounded mean oscillation	Definition	Functions of a complex variable
Grauert's semicontinuity theorem	Theorem	Several complex variables and analytic spaces
Hypernetted-chain equation	Example	Statistical mechanics, structure of matter
Gauss map	Example	Number theory
Iwasawa theory	Definition	Number theory
Doob's martingale convergence theorems	Theorem	Probability theory and stochastic processes
Duality in order theory	Concept	Order, lattices, ordered algebraic structures
Lambert quadrilateral	Concept	Geometry
Unary algebra	Definition	General algebraic systems
Ruelle zeta function	Definition	Dynamical systems and ergodic theory
Parametric model	Concept	Statistics
Random integral equation	Definition	Integral equations
Fourier integral operator	Definition	Partial differential equations
Uniformly most powerful test	Definition	Statistics
Compactness of families of harmonic functions	Theorem	Potential theory
Willmore flow	Concept	Differential geometry
Oka coherence theorem	Theorem	Several complex variables and analytic spaces
Zeros of Bessel functions	Definition	Special functions
Arity	Concept	General algebraic systems
Erlangen program	Definition	Geometry
Mittag-Leffler summation	Concept	Sequences, series, summability
Model theory of algebraically closed fields	Concept	Field theory and polynomials
Elliptic operator on a compact manifold	Concept	Global analysis, analysis on manifolds
Upwind scheme	Concept	Numerical analysis
Global analysis	Concept	Global analysis, analysis on manifolds
Mikusiński operational calculus	Definition	Integral transforms, operational calculus
Fully nonlinear PDE	Definition	Partial differential equations
Algebraic space	Concept	Algebraic geometry
Galois correspondence for coverings	Theorem	Manifolds and cell complexes
Complex powers of elliptic operators	Concept	Global analysis, analysis on manifolds
Zaslavsky's theorem	Theorem	Convex and discrete geometry
Smith normal form	Theorem	Linear and multilinear algebra; matrix theory
Plücker coordinates	Definition	Geometry
Gauss–Kronrod quadrature formula	Definition	Numerical analysis
Busemann–Petty problem	Problem	Convex and discrete geometry
McShane–Whitney extension	Theorem	Real functions
Mellin transform method	Definition	Integral equations
Model	Concept	Mathematical logic and foundations
Krull dimension	Concept	Commutative algebra
Bockstein spectral sequence	Theorem	Algebraic topology
Center of a ring	Concept	Associative rings and algebras
Harmonic polynomial	Concept	Potential theory
Sets of capacity zero	Definition	Potential theory
Singular control	Definition	Calculus of variations and optimal control; optimization
Runge domain	Definition	Several complex variables and analytic spaces
Locally finite measure	Definition	Measure and integration
Lippmann–Schwinger equation	Example	Quantum theory
Extended finite element method	Concept	Numerical analysis
Algebraic number field	Concept	Number theory
Real projective plane	Example	Geometry
Sum-free set	Definition	Number theory
Congruent number problem	Problem	Number theory
Computably enumerable set	Definition	Mathematical logic and foundations
Suspension flow	Concept	Dynamical systems and ergodic theory
Commuting matrices	Definition	Linear and multilinear algebra; matrix theory
Piecewise linear manifold	Definition	Manifolds and cell complexes
Dedekind eta function	Concept	Number theory
Bernstein inequalities	Theorem	Probability theory and stochastic processes
Principal symbol	Definition	Partial differential equations
Anderson localization	Concept	Statistical mechanics, structure of matter
Dowker space	Concept	General topology
Kendall rank correlation coefficient	Definition	Statistics
Siegel modular form	Concept	Number theory
Complex Monge–Ampère operator	Concept	Several complex variables and analytic spaces
Mordell–Weil theorem	Theorem	Number theory
Complex Monge–Ampère operator	Definition	Several complex variables and analytic spaces
Semisimple ring	Definition	Associative rings and algebras
Perimeter of a set	Definition	Calculus of variations and optimal control; optimization
Octahedral axiom	Definition	Category theory; homological algebra
Wallpaper group	Example	Group theory and generalizations
Hermite–Genocchi formula	Theorem	Numerical analysis
Perfect field	Definition	Field theory and polynomials
Censoring	Concept	Statistics
Unit and counit	Concept	Category theory; homological algebra
Morse function	Definition	Manifolds and cell complexes
Spectral method	Concept	Numerical analysis
Local ring	Concept	Commutative algebra
Chevalley's structure theorem	Theorem	Algebraic geometry
Integral equation of the third kind	Definition	Integral equations
Interchange of summation order	Corollary	Sequences, series, summability
Semimartingale	Definition	Probability theory and stochastic processes
Analytic continuation in several variables	Concept	Several complex variables and analytic spaces
Analytic torsion	Concept	Global analysis, analysis on manifolds
Infinitary operation	Definition	General algebraic systems
Inverse Mellin transform as inverse Fourier transform	Proposition	Integral transforms, operational calculus
Mittag-Leffler function	Definition	Special functions
Proportional hazards model	Concept	Statistics
Jackson integral	Definition	Combinatorics
Displacement convexity	Concept	Calculus of variations and optimal control; optimization
Crisis	Concept	Dynamical systems and ergodic theory
Torsion of a curve	Definition	Differential geometry
Haar system	Concept	Harmonic analysis on Euclidean spaces
Vitali–Hahn–Saks theorem	Theorem	Measure and integration
Pluripolar set	Concept	Several complex variables and analytic spaces
Integrable system	Concept	Dynamical systems and ergodic theory
Resurgent function	Definition	Ordinary differential equations
Operator monotone function	Concept	Operator theory
Large sieve	Concept	Number theory
Uniserial module	Definition	Associative rings and algebras
Formalism	Definition	Mathematical logic and foundations
Empirical distribution function	Definition	Statistics
Eulerian poset	Concept	Order, lattices, ordered algebraic structures
Cohen–Macaulay ring	Concept	Commutative algebra
Hilbert's irreducibility theorem	Theorem	Field theory and polynomials
Killing–Hopf theorem	Theorem	Differential geometry
Fitting subgroup	Concept	Group theory and generalizations
Risk function	Concept	Statistics
Andrews–Curtis conjecture	Conjecture	Group theory and generalizations