Nodes at W0, stub

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

Ideas 6451–6600 of 12399.

Name	Kind	Subject
Non-wandering set	Concept	Dynamical systems and ergodic theory
Differential-algebraic system of equations	Concept	Ordinary differential equations
Convolution integral equation	Concept	Integral equations
Born series	Definition	Quantum theory
Euler–Boole summation	Definition	Numerical analysis
Comparison principle	Theorem	Partial differential equations
Steinhaus theorem	Theorem	Measure and integration
Dehn invariant	Definition	Convex and discrete geometry
Positive harmonic function	Concept	Potential theory
Eisenstein series	Concept	Number theory
Cauchy formula for repeated integration	Theorem	Real functions
Lidskii's trace formula for integral operators	Corollary	Integral equations
Varieties as categories of algebras over a monad	Theorem	Category theory; homological algebra
Attractor	Definition	Dynamical systems and ergodic theory
Multidimensional scaling	Concept	Statistics
Optimal control	Definition	Calculus of variations and optimal control; optimization
Skolem normal form	Definition	Mathematical logic and foundations
Weyl group of a compact Lie group	Concept	Topological groups, Lie groups
Koebe function	Example	Functions of a complex variable
Noncommutative Gröbner basis	Definition	Associative rings and algebras
Field homomorphism	Concept	Field theory and polynomials
Abel summation	Concept	Sequences, series, summability
Steenrod reduced power	Concept	Algebraic topology
Viscosity solution	Definition	Partial differential equations
Simple homotopy equivalence	Definition	Manifolds and cell complexes
Sperner property	Concept	Order, lattices, ordered algebraic structures
Steiner formula	Theorem	Convex and discrete geometry
Voronoi's conjecture on parallelohedra	Conjecture	Convex and discrete geometry
Heteroclinic orbit	Definition	Ordinary differential equations
Projection operation	Definition	General algebraic systems
Whitehead problem	Problem	Group theory and generalizations
Fenchel's theorem	Theorem	Differential geometry
Straszewicz's theorem	Theorem	Convex and discrete geometry
Stability condition	Concept	Category theory; homological algebra
Midpoint convex function	Definition	Real functions
Algebraic dimension	Concept	Several complex variables and analytic spaces
Tensor product of modules	Concept	Commutative algebra
Laguerre plane	Concept	Geometry
Exact couple	Definition	Algebraic topology
Pluripolar set	Definition	Several complex variables and analytic spaces
Fekete points	Concept	Potential theory
Prüfer group	Example	Group theory and generalizations
Bernstein's inequality for polynomials	Theorem	Approximations and expansions
Walsh function	Concept	Harmonic analysis on Euclidean spaces
Nonlinear Volterra equation	Concept	Integral equations
Whitney stratification	Definition	Several complex variables and analytic spaces
Rokhlin lemma	Lemma	Dynamical systems and ergodic theory
Stalk	Definition	General topology
Feigenbaum constants	Object	Dynamical systems and ergodic theory
Height function	Concept	Number theory
Equational theory	Concept	General algebraic systems
Integrable system	Definition	Dynamical systems and ergodic theory
Constructivism	Definition	Mathematical logic and foundations
Tridiagonal matrix algorithm	Theorem	Numerical analysis
Helly's theorem	Theorem	Convex and discrete geometry
Left-orderable group	Concept	Group theory and generalizations
Pseudospectrum	Concept	Numerical analysis
Chern–Simons theory	Concept	Manifolds and cell complexes
Semiorder	Concept	Order, lattices, ordered algebraic structures
Acyclic object	Concept	Category theory; homological algebra
Forcing	Concept	Mathematical logic and foundations
Harish-Chandra character	Concept	Topological groups, Lie groups
Homotopic maps	Concept	Algebraic topology
Hartman–Wintner theorem	Theorem	Ordinary differential equations
Curve of constant width	Definition	Convex and discrete geometry
Delta functor	Definition	Category theory; homological algebra
Principal symbol	Concept	Partial differential equations
Bounded variation	Definition	Real functions
Center manifold	Definition	Ordinary differential equations
Atomic domain	Concept	Commutative algebra
Lattice polytope	Concept	Convex and discrete geometry
Lamé equations of elasticity	Definition	Mechanics of deformable solids
Quantum unique ergodicity conjecture	Conjecture	Global analysis, analysis on manifolds
Krull topology	Concept	Field theory and polynomials
Stable distribution	Concept	Probability theory and stochastic processes
Intermittency	Definition	Dynamical systems and ergodic theory
Synthetic differential geometry	Concept	Geometry
Kleene's recursion theorem	Theorem	Mathematical logic and foundations
Monad	Definition	Category theory; homological algebra
Quasi-ergodicity	Concept	Dynamical systems and ergodic theory
Einstein problem	Theorem	Convex and discrete geometry
Smooth manifold	Concept	Global analysis, analysis on manifolds
Sturm–Liouville problem as an integral equation	Example	Integral equations
Domain theory	Definition	Order, lattices, ordered algebraic structures
Frame bundle	Concept	Global analysis, analysis on manifolds
Minkowski addition	Definition	Convex and discrete geometry
Laplace–Beltrami operator	Concept	Global analysis, analysis on manifolds
Banach bundle	Concept	Global analysis, analysis on manifolds
Cauchy–Kovalevskaya theorem for ODEs	Theorem	Ordinary differential equations
McKean–Singer formula	Theorem	Global analysis, analysis on manifolds
Reduced product	Concept	General algebraic systems
Compact Lie group	Definition	Topological groups, Lie groups
Fitting's lemma	Lemma	Associative rings and algebras
Stochastic difference equation	Definition	Difference and functional equations
Subanalytic set	Definition	Several complex variables and analytic spaces
Dixmier conjecture	Conjecture	Associative rings and algebras
Gross–Pitaevskii equation	Concept	Partial differential equations
Hopf bifurcation	Concept	Ordinary differential equations
Dini test	Theorem	Harmonic analysis on Euclidean spaces
Holomorphic line bundle	Definition	Several complex variables and analytic spaces
Hörmander–Mikhlin multiplier theorem	Theorem	Harmonic analysis on Euclidean spaces
Asymptotics of Bessel functions	Theorem	Special functions
Quasi-measure-preserving map	Concept	Measure and integration
Regular polytope	Concept	Geometry
Dynamic programming in continuous time	Definition	Calculus of variations and optimal control; optimization
Information geometry	Concept	Differential geometry
Siegel disc	Definition	Dynamical systems and ergodic theory
Pólya's conjecture on Laplacian eigenvalues	Conjecture	Partial differential equations
Log-rank test	Concept	Statistics
Sine-Gordon equation	Definition	Partial differential equations
Bloch space	Concept	Functions of a complex variable
Filter limit	Concept	General topology
Adic space	Concept	Algebraic geometry
Cauchy's exponential equation	Definition	Difference and functional equations
Positive-definite function	Concept	Harmonic analysis on Euclidean spaces
Hausdorff distance	Concept	General topology
Whittaker transform	Definition	Integral transforms, operational calculus
Dodgson condensation	Definition	Linear and multilinear algebra; matrix theory
Beltrami identity	Proposition	Calculus of variations and optimal control; optimization
Lagrange resolvent	Definition	Field theory and polynomials
Minkowski–Bouligand dimension	Definition	Measure and integration
Adaptive step size	Definition	Numerical analysis
Maximal compact subgroup	Definition	Topological groups, Lie groups
Cauchy–Davenport theorem	Theorem	Number theory
State on a C*-algebra	Concept	Functional analysis
Join and meet	Definition	Order, lattices, ordered algebraic structures
Epsilon-net of a set system	Definition	Convex and discrete geometry
Mathematical formulation of quantum mechanics	Definition	Quantum theory
Fractional Laplacian	Concept	Partial differential equations
Autoregressive–moving-average model	Definition	Statistics
Borel–Carathéodory theorem	Theorem	Functions of a complex variable
Hierarchical matrix	Definition	Numerical analysis
Problem of Apollonius	Problem	Geometry
Darboux integral	Concept	Real functions
Finiteness of the class number	Theorem	Number theory
Homotopy continuation for polynomial systems	Definition	Numerical analysis
Subdirect product	Definition	General algebraic systems
Shearlet	Concept	Harmonic analysis on Euclidean spaces
Yoneda embedding	Definition	Category theory; homological algebra
Arithmetic dynamics	Definition	Dynamical systems and ergodic theory
Weak mixing	Definition	Dynamical systems and ergodic theory
Classification of Fatou components	Theorem	Dynamical systems and ergodic theory
Compactness of the spectrum	Theorem	Functional analysis
Principal curvature	Concept	Differential geometry
Dido's problem	Problem	Calculus of variations and optimal control; optimization
Bidual and canonical embedding	Definition	Functional analysis
f-ring	Definition	Order, lattices, ordered algebraic structures
Besov space	Definition	Functional analysis
Square-integrable kernel	Definition	Integral equations
Stone algebra	Definition	Order, lattices, ordered algebraic structures