Concepts

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

Ideas 1501–1650 of 5206.

Name	Kind	Subject
Pushforward measure	Concept	Measure and integration
Additive combinatorics	Concept	Number theory
Positive-definite function on a group	Concept	Abstract harmonic analysis
Thue equation	Concept	Number theory
Sullivan minimal model	Concept	Algebraic topology
Saturation of approximation methods	Concept	Approximations and expansions
Transfer homomorphism	Concept	Group theory and generalizations
Maass wave form	Concept	Number theory
Graph of an operator	Concept	Operator theory
Galois category	Concept	Algebraic geometry
Analytic set	Concept	Mathematical logic and foundations
Local property	Concept	Commutative algebra
Nagata ring	Concept	Commutative algebra
Dissipative operator	Concept	Operator theory
Calderón–Zygmund operator	Concept	Harmonic analysis on Euclidean spaces
Total variation distance between probability measures	Concept	Probability theory and stochastic processes
Wave front set	Concept	Partial differential equations
Metric outer measure	Concept	Measure and integration
Closable operator	Concept	Operator theory
Mild solution	Concept	Operator theory
Leray–Schauder degree	Concept	Operator theory
Sphere bundle	Concept	Algebraic topology
Periodic solution of a difference equation	Concept	Difference and functional equations
Krohn–Rhodes theory	Concept	Group theory and generalizations
Subadditive function	Concept	Difference and functional equations
Covering space	Concept	Manifolds and cell complexes
Term algebra	Concept	General algebraic systems
Picard group	Concept	Algebraic geometry
Periodogram	Concept	Statistics
Bootstrap	Concept	Statistics
Hilbert dimension	Concept	Functional analysis
Quasi-compact morphism	Concept	Algebraic geometry
Quotient of a topological group	Concept	Topological groups, Lie groups
Linear regression	Concept	Statistics
Einstein manifold	Concept	Differential geometry
Minimal surface	Concept	Differential geometry
Hyperreal number	Concept	Real functions
Elliptic curve	Concept	Algebraic geometry
Hypergeometric series	Concept	Special functions
Response surface methodology	Concept	Statistics
Singularity theory	Concept	Algebraic geometry
Reductive Lie group	Concept	Topological groups, Lie groups
Convex body	Concept	Convex and discrete geometry
Radical of an ideal	Concept	Commutative algebra
Complete intersection	Concept	Algebraic geometry
Godunov's scheme	Concept	Numerical analysis
Presentation of an algebra	Concept	General algebraic systems
Quotient category	Concept	Category theory; homological algebra
Nilmanifold	Concept	Topological groups, Lie groups
Schur polynomial	Concept	Combinatorics
Credible interval	Concept	Statistics
Survival analysis	Concept	Statistics
Domain of holomorphy	Concept	Several complex variables and analytic spaces
Analytic index	Concept	Global analysis, analysis on manifolds
M-estimator	Concept	Statistics
Digital topology	Concept	Computer science
Day convolution	Concept	Category theory; homological algebra
Renewal theory	Concept	Probability theory and stochastic processes
Hypergeometric function	Concept	Special functions
Excessive function	Concept	Probability theory and stochastic processes
Equilibrium measure	Concept	Potential theory
Formalism	Concept	Mathematical logic and foundations
Convenient vector space	Concept	Functional analysis
Logarithmic potential	Concept	Potential theory
Morse–Bott function	Concept	Manifolds and cell complexes
Palais–Smale compactness condition	Concept	Global analysis, analysis on manifolds
Separation of variables	Concept	Ordinary differential equations
Classical orthogonal polynomials	Concept	Special functions
Dedekind number	Concept	Order, lattices, ordered algebraic structures
Lopatinskii–Shapiro condition	Concept	Partial differential equations
Hermitian form	Concept	Linear and multilinear algebra; matrix theory
Homotopy category	Concept	Category theory; homological algebra
Perfect ring	Concept	Associative rings and algebras
Pluriharmonic function	Concept	Several complex variables and analytic spaces
Continuous dual space	Concept	Functional analysis
Soundness	Concept	Mathematical logic and foundations
Truncation error	Concept	Numerical analysis
Graph enumeration	Concept	Combinatorics
Partial difference equation	Concept	Difference and functional equations
Relative homology	Concept	Algebraic topology
Localization	Concept	Commutative algebra
Second variation	Concept	Calculus of variations and optimal control; optimization
Reproducing kernel Hilbert space	Concept	Functional analysis
Growth rate of a group	Concept	Group theory and generalizations
Near-unanimity term	Concept	General algebraic systems
Tate module	Concept	Algebraic geometry
Rational map	Concept	Algebraic geometry
Normed algebra	Concept	Functional analysis
Yoneda embedding	Concept	Category theory; homological algebra
Operator system	Concept	Functional analysis
Net	Concept	General topology
Chain homotopy	Concept	Category theory; homological algebra
Semimartingale	Concept	Probability theory and stochastic processes
C-infinity ring	Concept	Global analysis, analysis on manifolds
Homotopy fiber	Concept	Algebraic topology
Resonance	Concept	Ordinary differential equations
Coproduct	Concept	Category theory; homological algebra
Monomial ideal	Concept	Commutative algebra
Ricci curvature	Concept	Differential geometry
Realizability	Concept	Mathematical logic and foundations
Covering relation	Concept	Order, lattices, ordered algebraic structures
Bifurcation from a characteristic value	Concept	Operator theory
Feller process	Concept	Probability theory and stochastic processes
Fukaya category	Concept	Differential geometry
Intersection theory	Concept	Algebraic geometry
Random group	Concept	Group theory and generalizations
Block design	Concept	Combinatorics
Spherical Bessel functions	Concept	Special functions
Daniell integral	Concept	Measure and integration
Variational integrator	Concept	Numerical analysis
Compactly generated space	Concept	General topology
Regular function	Concept	Algebraic geometry
Commuting probability	Concept	Group theory and generalizations
Closed geodesic	Concept	Differential geometry
Exchangeable random variables	Concept	Probability theory and stochastic processes
Sober space	Concept	General topology
Signature operator	Concept	Global analysis, analysis on manifolds
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
Multidimensional transform	Concept	Integral transforms, operational calculus
Wavelet	Concept	Harmonic analysis on Euclidean spaces
Weak homotopy equivalence	Concept	Algebraic topology
Axiom of constructibility	Concept	Mathematical logic and foundations
Factor analysis	Concept	Statistics
Bornological space	Concept	Functional analysis
F-algebra	Concept	Category theory; homological algebra
Buchberger's algorithm	Concept	Commutative algebra
Power of a test	Concept	Statistics
Conformal geometric algebra	Concept	Linear and multilinear algebra; matrix theory
Global attractor	Concept	Partial differential equations
Jones polynomial	Concept	Manifolds and cell complexes
Recurrent point	Concept	Dynamical systems and ergodic theory
Nilpotency class	Concept	Group theory and generalizations
Coplanarity	Concept	Geometry
Field of rational functions	Concept	Field theory and polynomials
Dirichlet eigenvalue	Concept	Partial differential equations
Markov partition	Concept	Dynamical systems and ergodic theory
Buekenhout geometry	Concept	Geometry
Approximate derivative	Concept	Real functions
Pi-system	Concept	Measure and integration
Matroid minor	Concept	Combinatorics
Kuranishi structure	Concept	Differential geometry
Weak operator topology	Concept	Operator theory
Finite model theory	Concept	Mathematical logic and foundations
Arithmetic group	Concept	Group theory and generalizations