Concepts

A mathematical idea. It can have more than one definition.

Ideas 2551–2700 of 2778.

Name	Kind	Subject
Macdonald polynomial	Concept	Combinatorics
Graph minor	Concept	Combinatorics
Germ	Concept	General topology
Completion of a valued field	Concept	Field theory and polynomials
Mackey topology	Concept	Functional analysis
Doubling measure	Concept	Measure and integration
Wreath product	Concept	Group theory and generalizations
Consistency of summability methods	Concept	Sequences, series, summability
Coherent ring	Concept	Commutative algebra
Cellular homology	Concept	Algebraic topology
Packing measure	Concept	Measure and integration
Lusternik–Schnirelmann category	Concept	Algebraic topology
Canonical module	Concept	Commutative algebra
Cofibration	Concept	Algebraic topology
Cerf theory	Concept	Manifolds and cell complexes
Sequent calculus	Concept	Mathematical logic and foundations
Matrix function	Concept	Linear and multilinear algebra; matrix theory
Tensor rank	Concept	Linear and multilinear algebra; matrix theory
Dehn twist	Concept	Manifolds and cell complexes
Lambert summation	Concept	Sequences, series, summability
Rees algebra	Concept	Commutative algebra
Frobenius method	Concept	Ordinary differential equations
Classifying space of a group	Concept	Algebraic topology
Random walk on a group	Concept	Probability theory and stochastic processes
Orlicz space	Concept	Functional analysis
Signature	Concept	Mathematical logic and foundations
Sigma-finite measure	Concept	Measure and integration
Generic filter	Concept	Mathematical logic and foundations
Axiom of dependent choice	Concept	Mathematical logic and foundations
Aitken's delta-squared process	Concept	Numerical analysis
Hilbert symbol	Concept	Number theory
p-adic absolute value	Concept	Field theory and polynomials
Holonomy	Concept	Differential geometry
Filtration of a module	Concept	Commutative algebra
Hilbert sum	Concept	Functional analysis
Provability logic	Concept	Mathematical logic and foundations
Matrix congruence	Concept	Linear and multilinear algebra; matrix theory
Hopf algebra structure on cohomology	Concept	Algebraic topology
Smoothness classes	Concept	Real functions
Intersection form	Concept	Manifolds and cell complexes
Nonstandard analysis	Concept	Real functions
Sequential space	Concept	General topology
Luzin N property	Concept	Real functions
Richardson extrapolation	Concept	Numerical analysis
Wirtinger derivatives	Concept	Functions of a complex variable
Morley rank	Concept	Mathematical logic and foundations
Series in Banach spaces	Concept	Sequences, series, summability
Divisor class group	Concept	Commutative algebra
Lattice (group)	Concept	Number theory
Stopping time	Concept	Probability theory and stochastic processes
Galois theory	Concept	Field theory and polynomials
Essential supremum	Concept	Measure and integration
Field trace	Concept	Field theory and polynomials
Stieltjes function	Concept	Real functions
Ideal class group	Concept	Number theory
Metacompact space	Concept	General topology
Tight and overtwisted contact structures	Concept	Manifolds and cell complexes
Classifying space	Concept	Algebraic topology
Euler transform	Concept	Sequences, series, summability
Hilbert class field	Concept	Number theory
Section of a vector bundle	Concept	Algebraic topology
Invariant set	Concept	Ordinary differential equations
Tensor field	Concept	Differential geometry
Tangent bundle	Concept	Global analysis, analysis on manifolds
Proximity space	Concept	General topology
Group representation	Concept	Group theory and generalizations
Minkowski–Bouligand dimension	Concept	Measure and integration
Cauchy filter	Concept	General topology
Resolvent set	Concept	Operator theory
Computability theory	Concept	Mathematical logic and foundations
Large cardinal	Concept	Mathematical logic and foundations
Formally real field	Concept	Field theory and polynomials
Lie symmetry method	Concept	Ordinary differential equations
Center manifold	Concept	Ordinary differential equations
Quadratic variation	Concept	Probability theory and stochastic processes
Rees matrix semigroup	Concept	Group theory and generalizations
Nörlund mean	Concept	Sequences, series, summability
Cut locus	Concept	Differential geometry
Finite ring	Concept	Associative rings and algebras
Localization at a prime ideal	Concept	Commutative algebra
Rough path	Concept	Probability theory and stochastic processes
Rack and quandle	Concept	Manifolds and cell complexes
Integrable function	Concept	Measure and integration
Chern–Simons form	Concept	Differential geometry
Permanent	Concept	Linear and multilinear algebra; matrix theory
Sub-Gaussian distribution	Concept	Probability theory and stochastic processes
Laguerre–Pólya class	Concept	Functions of a complex variable
Jacobson radical	Concept	Commutative algebra
Khovanov homology	Concept	Manifolds and cell complexes
CAT(0) group	Concept	Group theory and generalizations
Local martingale	Concept	Probability theory and stochastic processes
Kovacic's algorithm	Concept	Ordinary differential equations
Nuclear space	Concept	Functional analysis
Naive set theory	Concept	Mathematical logic and foundations
Regular semigroup	Concept	Group theory and generalizations
Colombeau algebra	Concept	Functional analysis
Elliptic cohomology	Concept	Algebraic topology
Train track	Concept	Manifolds and cell complexes
Function field	Concept	Field theory and polynomials
Empirical process	Concept	Probability theory and stochastic processes
Grunsky matrix	Concept	Functions of a complex variable
Equidistribution modulo one	Concept	Number theory
Sumset	Concept	Number theory
Factorization of polynomials over finite fields	Concept	Number theory
Hemicontinuity	Concept	General topology
Branch point	Concept	Functions of a complex variable
Nuclear operator	Concept	Operator theory
Contraction semigroup	Concept	Operator theory
Intuitionism	Concept	Mathematical logic and foundations
Amalgamation property	Concept	Mathematical logic and foundations
Dirichlet process	Concept	Probability theory and stochastic processes
Homology with coefficients	Concept	Algebraic topology
Weyl–Titchmarsh theory	Concept	Ordinary differential equations
Cardinal function	Concept	General topology
Numerical range	Concept	Operator theory
Elliptic operator	Concept	Operator theory
Umbilical point	Concept	Differential geometry
Sequence space	Concept	Functional analysis
Toric ideal	Concept	Commutative algebra
Homotopy equivalence	Concept	Algebraic topology
Kummer theory	Concept	Number theory
Finite-dimensional distributions	Concept	Probability theory and stochastic processes
Connected sum	Concept	Manifolds and cell complexes
Primitive permutation group	Concept	Group theory and generalizations
Monotone operator	Concept	Operator theory
Pseudoanalytic function	Concept	Functions of a complex variable
q-Pochhammer symbol	Concept	Combinatorics
Universal cover	Concept	Manifolds and cell complexes
Homotopy principle	Concept	Global analysis, analysis on manifolds
Iwasawa theory	Concept	Number theory
Evolute	Concept	Differential geometry
Class	Concept	Mathematical logic and foundations
Injectivity radius	Concept	Differential geometry
Castelnuovo–Mumford regularity	Concept	Commutative algebra
Hurewicz fibration	Concept	Algebraic topology
Lagrange polynomial	Concept	Approximations and expansions
Cheeger constant	Concept	Combinatorics
Exponential map	Concept	Differential geometry
Measure with density	Concept	Measure and integration
Branched covering	Concept	Manifolds and cell complexes
Fractional ideal	Concept	Commutative algebra
Schottky group	Concept	Functions of a complex variable
Hessenberg matrix	Concept	Linear and multilinear algebra; matrix theory
Boundary layer	Concept	Ordinary differential equations
Homotopy groups of spheres	Concept	Algebraic topology
Stationary set	Concept	Mathematical logic and foundations
HNN extension	Concept	Group theory and generalizations
Quasi-analytic function	Concept	Real functions
Limit set	Concept	Dynamical systems and ergodic theory
Excellent ring	Concept	Commutative algebra