Nodes at W0, stub

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

Ideas 6001–6150 of 12399.

Name	Kind	Subject
Facet	Concept	Convex and discrete geometry
Dual graph	Definition	Combinatorics
Absolute Galois group	Definition	Field theory and polynomials
Stiffness matrix	Definition	Numerical analysis
Relaxation of a variational problem	Concept	Calculus of variations and optimal control; optimization
Fourier transform	Concept	Harmonic analysis on Euclidean spaces
Wald test	Concept	Statistics
Stable homotopy category	Definition	Algebraic topology
Local solvability	Definition	Partial differential equations
Majority term	Definition	General algebraic systems
Clopen set	Concept	General topology
Function field	Definition	Field theory and polynomials
Veronese embedding	Example	Algebraic geometry
Tangent bundle	Definition	Global analysis, analysis on manifolds
Shape operator	Concept	Differential geometry
Subnormal subgroup	Definition	Group theory and generalizations
Euler's sine product	Theorem	Functions of a complex variable
Hausdorff distance	Definition	General topology
Contiguity of measures	Concept	Statistics
Monodromy theorem for singularities	Theorem	Several complex variables and analytic spaces
Heaviside operational calculus	Definition	Integral transforms, operational calculus
Trace form	Definition	Field theory and polynomials
Supporting hyperplane theorem	Theorem	Convex and discrete geometry
Regular surface	Definition	Differential geometry
Extremal graph theory	Definition	Combinatorics
Integral closure	Definition	Commutative algebra
Donaldson theory	Definition	Manifolds and cell complexes
Sokhotski–Plemelj formulae	Theorem	Functions of a complex variable
Hopf's theorem on cohomology of compact Lie groups	Theorem	Manifolds and cell complexes
Complexification of a Lie group	Concept	Topological groups, Lie groups
Hilbert–Smith conjecture	Conjecture	Manifolds and cell complexes
Diffeology	Definition	Global analysis, analysis on manifolds
Kan extension	Definition	Category theory; homological algebra
Near-field	Concept	Field theory and polynomials
Kaplansky's conjectures	Conjecture	Associative rings and algebras
Coherent analytic sheaf	Concept	Several complex variables and analytic spaces
Lazard's theorem on p-adic analytic groups	Theorem	Topological groups, Lie groups
Margulis superrigidity theorem	Theorem	Topological groups, Lie groups
Automorphism	Concept	General algebraic systems
Admissible decision rule	Concept	Statistics
Stationary process	Concept	Probability theory and stochastic processes
Direct collocation	Definition	Calculus of variations and optimal control; optimization
Essentially self-adjoint operator	Concept	Operator theory
Compactness via ultrafilters	Theorem	General topology
Pfaffian system	Definition	Global analysis, analysis on manifolds
Spherical harmonics	Definition	Special functions
Topos	Definition	Category theory; homological algebra
Moser's worm problem	Problem	Convex and discrete geometry
Left ideal	Definition	Associative rings and algebras
O-minimal theory	Concept	Mathematical logic and foundations
Initial value problem for a recurrence	Definition	Difference and functional equations
Presheaf	Definition	Category theory; homological algebra
Countably compact space	Definition	General topology
Quasilinear PDE	Definition	Partial differential equations
Atomistic lattice	Definition	Order, lattices, ordered algebraic structures
Optimal control of partial differential equations	Definition	Calculus of variations and optimal control; optimization
Dirichlet-to-Neumann operator	Definition	Partial differential equations
Raviart–Thomas elements	Object	Numerical analysis
Curve-shortening flow	Concept	Differential geometry
Stone's theorem on one-parameter unitary groups	Theorem	Operator theory
Morrey quasiconvexity	Concept	Calculus of variations and optimal control; optimization
Bessel potential space	Concept	Functional analysis
Coequalizer	Concept	Category theory; homological algebra
Plateau's problem	Problem	Calculus of variations and optimal control; optimization
Dirichlet form	Definition	Potential theory
Loeb measure	Concept	Measure and integration
Validated numerics	Concept	Numerical analysis
Riesz–Markov–Kakutani representation theorem	Theorem	Measure and integration
Lebesgue integral	Concept	Measure and integration
Poisson's equation	Concept	Partial differential equations
Universal covering group	Definition	Topological groups, Lie groups
Harmonic space	Concept	Potential theory
Perfectly normal space	Definition	General topology
Many-valued logic	Concept	Mathematical logic and foundations
Affine connection	Definition	Differential geometry
C-infinity ring	Definition	Global analysis, analysis on manifolds
Laplace transform of the error function	Example	Integral transforms, operational calculus
Minimum description length	Definition	Statistics
Surface of general type	Definition	Algebraic geometry
Degree of a continuous map	Definition	Algebraic topology
The Klein four-group is abelian but not cyclic	Example	Group theory and generalizations
Darcy's law	Fact	Fluid mechanics
CAT(0) group	Definition	Group theory and generalizations
Section and retraction	Concept	Category theory; homological algebra
Expander graph	Concept	Combinatorics
Pixley term	Definition	General algebraic systems
von Neumann regular ring	Concept	Associative rings and algebras
Hypergeometric function of a matrix argument	Concept	Special functions
Kobayashi metric	Concept	Several complex variables and analytic spaces
James space	Example	Functional analysis
Hyperbolic knot	Definition	Manifolds and cell complexes
Kendall rank correlation coefficient	Concept	Statistics
Priestley space	Definition	Order, lattices, ordered algebraic structures
Borel measure	Concept	Measure and integration
Levi–Malcev decomposition	Theorem	Topological groups, Lie groups
Minimal variety	Definition	General algebraic systems
Locally finite family	Concept	General topology
Integral equation of the third kind	Concept	Integral equations
Inverse limit	Concept	Category theory; homological algebra
Newton series	Definition	Difference and functional equations
Schubert variety	Definition	Algebraic geometry
Unitary representation	Definition	Topological groups, Lie groups
Birkhoff–Frink theorem	Theorem	Order, lattices, ordered algebraic structures
Merton's portfolio problem	Problem	Game theory, economics, finance, and other social and behavioral sciences
Hermite interpolation	Definition	Approximations and expansions
Elementary abelian group	Concept	Group theory and generalizations
Picard group of a ring	Concept	Commutative algebra
Coordinate ring	Definition	Algebraic geometry
Fenichel's theorem	Theorem	Ordinary differential equations
Hall subgroup	Definition	Group theory and generalizations
Dowker space	Definition	General topology
Chern–Simons theory	Definition	Manifolds and cell complexes
Ternary operation	Definition	General algebraic systems
Del Pezzo surface	Definition	Algebraic geometry
Long exact sequence of homotopy groups	Theorem	Algebraic topology
Arithmetic–geometric mean and elliptic integrals	Theorem	Special functions
Discriminant of a number field	Concept	Number theory
Canonical correlation	Concept	Statistics
Monstrous moonshine	Theorem	Number theory
Euler–Lotka equation	Example	Integral equations
Complexification of a Lie group	Definition	Topological groups, Lie groups
Residue calculus for Laplace inversion	Concept	Integral transforms, operational calculus
Admissible representation	Definition	Topological groups, Lie groups
Heat potential	Definition	Partial differential equations
Invertible ideal	Concept	Commutative algebra
Fold catastrophe	Example	Global analysis, analysis on manifolds
Recurrent point	Definition	Dynamical systems and ergodic theory
Graded manifold	Concept	Global analysis, analysis on manifolds
ℓ-adic cohomology	Concept	Algebraic geometry
s-cobordism theorem	Theorem	Manifolds and cell complexes
Kaplansky's zero divisor conjecture	Conjecture	Associative rings and algebras
Involute	Concept	Differential geometry
Kloosterman sum	Concept	Number theory
Semianalytic set	Concept	Several complex variables and analytic spaces
Subdivision surface	Definition	Numerical analysis
Closing lemma	Theorem	Dynamical systems and ergodic theory
Toric variety	Definition	Algebraic geometry
Proximal operator	Concept	Operations research, mathematical programming
Weak equivalence	Concept	Category theory; homological algebra
Self-avoiding walk	Concept	Statistical mechanics, structure of matter
Craig interpolation theorem	Theorem	Mathematical logic and foundations
Regular function	Definition	Algebraic geometry
Line with two origins	Counterexample	General topology
Indecomposable module	Concept	Associative rings and algebras
Rosenbrock methods	Proposition	Numerical analysis
Singular integral equation	Concept	Integral equations
Residuated lattice	Concept	Order, lattices, ordered algebraic structures
Special adjoint functor theorem	Theorem	Category theory; homological algebra
Higher-order differences	Definition	Difference and functional equations
Berezin integral	Definition	Global analysis, analysis on manifolds