Concepts

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

Ideas 4651–4800 of 5200.

Name	Kind	Subject
Gelfand transform	Concept	Functional analysis
Tensor decomposition	Concept	Linear and multilinear algebra; matrix theory
Hardy–Littlewood maximal function	Concept	Harmonic analysis on Euclidean spaces
Interpolation space	Concept	Functional analysis
Exact couple	Concept	Algebraic topology
Baskakov operator	Concept	Approximations and expansions
Haar measure	Concept	Measure and integration
Exponential stability	Concept	Ordinary differential equations
Lax–Friedrichs method	Concept	Numerical analysis
Boolean algebras canonically defined	Concept	Order, lattices, ordered algebraic structures
Synthetic geometry	Concept	Geometry
G-structure	Concept	Differential geometry
Macdonald polynomial	Concept	Combinatorics
Graph minor	Concept	Combinatorics
Whittaker transform	Concept	Integral transforms, operational calculus
Medial magma	Concept	Group theory and generalizations
Cascade algorithm	Concept	Numerical analysis
Germ	Concept	General topology
Canonical bundle	Concept	Algebraic geometry
Well-posed problem	Concept	Partial differential equations
Universally closed morphism	Concept	Algebraic geometry
Whittle likelihood	Concept	Statistics
Free spectrum of a variety	Concept	General algebraic systems
Completion of a valued field	Concept	Field theory and polynomials
Mackey topology	Concept	Functional analysis
Inertial manifold	Concept	Dynamical systems and ergodic theory
Doubling measure	Concept	Measure and integration
Wreath product	Concept	Group theory and generalizations
Intermittency	Concept	Dynamical systems and ergodic theory
Fine topology	Concept	Potential theory
Gelfand pair	Concept	Abstract harmonic analysis
Consistency of summability methods	Concept	Sequences, series, summability
Hilbert–Schmidt operator	Concept	Operator theory
Dandelin spheres	Concept	Geometry
Robin constant	Concept	Potential theory
Elementary theory of the category of sets	Concept	Category theory; homological algebra
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
Natural duality	Concept	General algebraic systems
Cofibration	Concept	Algebraic topology
Homogeneous integral equation	Concept	Integral equations
Meromorphic function of several variables	Concept	Several complex variables and analytic spaces
Caccioppoli set	Concept	Calculus of variations and optimal control; optimization
Cerf theory	Concept	Manifolds and cell complexes
Sequent calculus	Concept	Mathematical logic and foundations
Dirichlet-to-Neumann operator	Concept	Partial differential equations
Neural network approximation	Concept	Approximations and expansions
Matrix function	Concept	Linear and multilinear algebra; matrix theory
Baum–Welch algorithm	Concept	Statistics
Eichler order	Concept	Number theory
MUSCL scheme	Concept	Numerical analysis
Limiting subdifferential	Concept	Calculus of variations and optimal control; optimization
Universal algebra	Concept	General algebraic systems
Tensor rank	Concept	Linear and multilinear algebra; matrix theory
Dehn twist	Concept	Manifolds and cell complexes
Linear extension	Concept	Order, lattices, ordered algebraic structures
Tension field	Concept	Global analysis, analysis on manifolds
Nemytskii operator	Concept	Operator theory
Lambert summation	Concept	Sequences, series, summability
H-representation and V-representation	Concept	Convex and discrete geometry
Hypergeometric differential equation	Concept	Special functions
Rees algebra	Concept	Commutative algebra
Frobenius method	Concept	Ordinary differential equations
Sets of capacity zero	Concept	Potential theory
End and coend	Concept	Category theory; homological algebra
Kelvin transform	Concept	Potential theory
Reinhardt domain	Concept	Several complex variables and analytic spaces
Classifying space of a group	Concept	Algebraic topology
Laguerre polynomials	Concept	Special functions
Many-sorted algebra	Concept	General algebraic systems
Random walk on a group	Concept	Probability theory and stochastic processes
Orlicz space	Concept	Functional analysis
Wilf–Zeilberger pair	Concept	Special functions
Ternary operation	Concept	General algebraic systems
Sparse approximation	Concept	Approximations and expansions
Extreme set	Concept	Convex and discrete geometry
Jacobi amplitude	Concept	Special functions
Signature	Concept	Mathematical logic and foundations
Quadratic polynomial dynamics	Concept	Dynamical systems and ergodic theory
Sigma-finite measure	Concept	Measure and integration
Generic filter	Concept	Mathematical logic and foundations
Hartley transform	Concept	Integral transforms, operational calculus
Axiom of dependent choice	Concept	Mathematical logic and foundations
Aitken's delta-squared process	Concept	Numerical analysis
Prime radical	Concept	Associative rings and algebras
Jacobson topology	Concept	Associative rings and algebras
Hilbert symbol	Concept	Number theory
Mehler–Fock transform	Concept	Integral transforms, operational calculus
Periodic tiling	Concept	Convex and discrete geometry
Infinitary operation	Concept	General algebraic systems
p-adic absolute value	Concept	Field theory and polynomials
Projective cover	Concept	Associative rings and algebras
Internal language	Concept	Mathematical logic and foundations
Lattice	Concept	Order, lattices, ordered algebraic structures
Holonomy	Concept	Differential geometry
Filtration of a module	Concept	Commutative algebra
Hamilton–Jacobi–Isaacs equation	Concept	Calculus of variations and optimal control; optimization
Direct product of algebras	Concept	General algebraic systems
Hilbert sum	Concept	Functional analysis
Nakano positivity	Concept	Several complex variables and analytic spaces
Provability logic	Concept	Mathematical logic and foundations
Matrix congruence	Concept	Linear and multilinear algebra; matrix theory
Hopf algebra structure on cohomology	Concept	Algebraic topology
Simplicial object	Concept	Category theory; homological algebra
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
Weak and strong extremum	Concept	Calculus of variations and optimal control; optimization
Pseudocomplement	Concept	Order, lattices, ordered algebraic structures
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
John ellipsoid	Concept	Convex and discrete geometry
Galois theory	Concept	Field theory and polynomials
Incomplete beta function	Concept	Special functions
Free lattice	Concept	Order, lattices, ordered algebraic structures
Sufficient statistic	Concept	Statistics
Essential supremum	Concept	Measure and integration
Field trace	Concept	Field theory and polynomials
Stieltjes function	Concept	Real functions
Stochastic difference equation	Concept	Difference and functional equations
Ideal class group	Concept	Number theory
Chain complex	Concept	Category theory; homological algebra
Jackknife	Concept	Statistics
Arnold tongue	Concept	Dynamical systems and ergodic theory
Metacompact space	Concept	General topology
Funk transform	Concept	Integral transforms, operational calculus
Tight and overtwisted contact structures	Concept	Manifolds and cell complexes
Finitely generated algebra	Concept	General algebraic systems
Abstract polytope	Concept	Convex and discrete geometry
Triangle center	Concept	Geometry
Quasivariety	Concept	General algebraic systems
Discrete harmonic function	Concept	Potential theory
Solution of recurrences by generating functions	Concept	Difference and functional equations
Propagation of uncertainty	Concept	Numerical analysis
Mean-field game	Concept	Game theory, economics, finance, and other social and behavioral sciences
Costate equation	Concept	Calculus of variations and optimal control; optimization
Classifying space	Concept	Algebraic topology
Euler transform	Concept	Sequences, series, summability
Estimating equations	Concept	Statistics
Regularization of ill-posed problems	Concept	Numerical analysis