Concepts

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

Ideas 3301–3450 of 5206.

Name	Kind	Subject
Fujiki class C	Concept	Several complex variables and analytic spaces
Regular singular point	Concept	Ordinary differential equations
Symmetric operator	Concept	Operator theory
Z-transform as a generating function	Concept	Integral transforms, operational calculus
Wiener amalgam space	Concept	Harmonic analysis on Euclidean spaces
Galois ring	Concept	Commutative algebra
Cross-validation	Concept	Statistics
Ordered semigroup	Concept	Order, lattices, ordered algebraic structures
Lambert series	Concept	Functions of a complex variable
Annihilator	Concept	Commutative algebra
Solvmanifold	Concept	Topological groups, Lie groups
Pseudocompact space	Concept	General topology
General recursive function	Concept	Mathematical logic and foundations
Contact manifold	Concept	Differential geometry
Jet bundle	Concept	Global analysis, analysis on manifolds
Eigenvalue algorithm	Concept	Numerical analysis
Cubic Hermite spline	Concept	Approximations and expansions
Banach lattice	Concept	Functional analysis
Abel–Jacobi map	Concept	Algebraic geometry
Constructive analysis	Concept	Mathematical logic and foundations
Residually finite group	Concept	Group theory and generalizations
Sphere packing	Concept	Convex and discrete geometry
Unit in the last place	Concept	Numerical analysis
Inversive geometry	Concept	Geometry
Geometric graph	Concept	Combinatorics
Diamond principle	Concept	Mathematical logic and foundations
Model theory	Concept	Mathematical logic and foundations
Bézout domain	Concept	Commutative algebra
Double-negation translation	Concept	Mathematical logic and foundations
Finite volume method	Concept	Numerical analysis
Eikonal equation	Concept	Partial differential equations
Periodic solutions of integral equations	Concept	Integral equations
Stable homotopy groups of spheres	Concept	Algebraic topology
Ideal of an algebraic set	Concept	Algebraic geometry
Absolutely convergent Fourier series	Concept	Harmonic analysis on Euclidean spaces
Fermi–Dirac integral	Concept	Special functions
Ordered vector space	Concept	Functional analysis
Free product of algebras	Concept	General algebraic systems
Diagram	Concept	Category theory; homological algebra
Stochastic ordering	Concept	Probability theory and stochastic processes
Hidden Markov model	Concept	Statistics
Fraïssé limit	Concept	Mathematical logic and foundations
Projective resolution	Concept	Commutative algebra
Homology sphere	Concept	Manifolds and cell complexes
Cohomology of Lie groups	Concept	Manifolds and cell complexes
Hilbert space	Concept	Functional analysis
Stein manifold	Concept	Several complex variables and analytic spaces
Fixed-point property of posets	Concept	Order, lattices, ordered algebraic structures
Holonomy groupoid of a foliation	Concept	Manifolds and cell complexes
Filtration	Concept	Probability theory and stochastic processes
Ovoid	Concept	Geometry
Lie groupoid	Concept	Topological groups, Lie groups
Riesz projector	Concept	Operator theory
Topological conjugacy	Concept	Dynamical systems and ergodic theory
Fredholm minors	Concept	Integral equations
No small subgroups	Concept	Topological groups, Lie groups
Distance geometry	Concept	Geometry
Desarguesian plane	Concept	Geometry
Primitive polynomial over a finite field	Concept	Number theory
Regular measure	Concept	Measure and integration
ADE singularity	Concept	Algebraic geometry
Distribution function of a measurable function	Concept	Measure and integration
Structure theory of totally disconnected locally compact groups	Concept	Topological groups, Lie groups
Rayleigh quotient for symmetric kernels	Concept	Integral equations
Kobayashi hyperbolic manifold	Concept	Several complex variables and analytic spaces
Minkowski content	Concept	Measure and integration
Bump function	Concept	Real functions
Fibration and cofibration	Concept	Category theory; homological algebra
de Casteljau's algorithm	Concept	Numerical analysis
Honeycomb	Concept	Convex and discrete geometry
Chain map	Concept	Category theory; homological algebra
Singular integral operator	Concept	Harmonic analysis on Euclidean spaces
Coupling	Concept	Probability theory and stochastic processes
Schreier coset graph	Concept	Group theory and generalizations
Algebraic variety	Concept	Algebraic geometry
Initial algebra semantics	Concept	General algebraic systems
Mellin transform method	Concept	Integral equations
Monte Carlo method	Concept	Numerical analysis
Digamma function	Concept	Special functions
Special functions	Concept	Special functions
Extremal length	Concept	Functions of a complex variable
Complex analytic space	Concept	Several complex variables and analytic spaces
Strip of convergence of the bilateral transform	Concept	Integral transforms, operational calculus
Well-formed formula	Concept	Mathematical logic and foundations
Chebyshev nodes	Concept	Numerical analysis
Laguerre series expansion of the Laplace transform	Concept	Integral transforms, operational calculus
Cospherical points	Concept	Geometry
Dialectica interpretation	Concept	Mathematical logic and foundations
Ornstein–Uhlenbeck process	Concept	Probability theory and stochastic processes
Radon measure	Concept	Measure and integration
Herman ring	Concept	Dynamical systems and ergodic theory
Dual abelian variety	Concept	Algebraic geometry
Lattice-ordered group	Concept	Order, lattices, ordered algebraic structures
Method of steps	Concept	Ordinary differential equations
Bachmann's reflection geometry	Concept	Geometry
Hadamard matrix	Concept	Combinatorics
Mathematical formulation of quantum mechanics	Concept	Quantum theory
Steiner conic	Concept	Geometry
Join and meet	Concept	Order, lattices, ordered algebraic structures
Enough projectives	Concept	Category theory; homological algebra
Order complex	Concept	Order, lattices, ordered algebraic structures
Trigonometric polynomial	Concept	Harmonic analysis on Euclidean spaces
Positive line bundle	Concept	Several complex variables and analytic spaces
Wythoff construction	Concept	Geometry
Barycentric subdivision	Concept	Algebraic topology
Properly discontinuous action	Concept	Manifolds and cell complexes
Automatic group	Concept	Group theory and generalizations
Resolvent	Concept	Operator theory
Ultrafilter	Concept	General topology
Approximately additive function	Concept	Difference and functional equations
Fisher's exact test	Concept	Statistics
Robust statistics	Concept	Statistics
Orthocomplemented lattice	Concept	Order, lattices, ordered algebraic structures
Atlas	Concept	Manifolds and cell complexes
Solvable by radicals	Concept	Field theory and polynomials
Fourier transform as Laplace transform on the imaginary axis	Concept	Integral transforms, operational calculus
Cayley–Klein metric	Concept	Geometry
Local field	Concept	Number theory
Pointed cone	Concept	Convex and discrete geometry
Riemann curvature tensor	Concept	Differential geometry
Machine epsilon	Concept	Numerical analysis
Itô calculus	Concept	Probability theory and stochastic processes
Isotonic regression	Concept	Statistics
Continuous functional calculus	Concept	Functional analysis
Exact sequence	Concept	Category theory; homological algebra
Inverse Fourier transform	Concept	Harmonic analysis on Euclidean spaces
Order dimension	Concept	Order, lattices, ordered algebraic structures
Resolutivity of boundary functions	Concept	Potential theory
Idempotent semiring	Concept	Associative rings and algebras
Haar measure on a Lie group	Concept	Topological groups, Lie groups
Abelian scheme	Concept	Algebraic geometry
Householder transformation	Concept	Numerical analysis
Strongly measurable function	Concept	Measure and integration
Affine variety	Concept	Algebraic geometry
CR function	Concept	Several complex variables and analytic spaces
Tetrahedron	Concept	Geometry
Sparse matrix	Concept	Numerical analysis
Convolution power	Concept	Integral transforms, operational calculus
Potential of a measure	Concept	Potential theory
Shilov boundary	Concept	Functional analysis
Zero-dimensional space	Concept	General topology
Separable closure	Concept	Field theory and polynomials
Doubly stochastic matrix	Concept	Linear and multilinear algebra; matrix theory
Induced representation	Concept	Group theory and generalizations
Scorer's function	Concept	Special functions
Yang–Mills equations	Concept	Mechanics of particles and systems
Alexander polynomial	Concept	Manifolds and cell complexes
Group C*-algebra	Concept	Topological groups, Lie groups
Chudnovsky algorithm	Concept	Number theory
Logistic regression	Concept	Statistics