Concepts

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

Ideas 1501–1650 of 2778.

Name	Kind	Subject
Rectifiable set	Concept	Measure and integration
Dedekind domain	Concept	Commutative algebra
Irreducible ideal	Concept	Commutative algebra
Combinatorial species	Concept	Combinatorics
Irreducible matrix	Concept	Linear and multilinear algebra; matrix theory
Unitization	Concept	Functional analysis
Sum-free set	Concept	Number theory
Reverse mathematics	Concept	Mathematical logic and foundations
Quadratic field	Concept	Number theory
LF-space	Concept	Functional analysis
Simple function	Concept	Measure and integration
Sturm–Liouville theory	Concept	Ordinary differential equations
Parallelizable manifold	Concept	Manifolds and cell complexes
Decomposition group	Concept	Number theory
Dirichlet character	Concept	Number theory
Extraspecial group	Concept	Group theory and generalizations
Artin–Schreier theory	Concept	Field theory and polynomials
Transformation semigroup	Concept	Group theory and generalizations
Subnormal operator	Concept	Operator theory
Euler summation	Concept	Sequences, series, summability
Envelope	Concept	Differential geometry
Chern–Weil homomorphism	Concept	Differential geometry
Regular open set	Concept	General topology
Injective module	Concept	Commutative algebra
Adjoint of an unbounded operator	Concept	Operator theory
F-space	Concept	Functional analysis
Coercive bilinear form	Concept	Operator theory
Polytope combinatorics	Concept	Convex and discrete geometry
Hyperkähler manifold	Concept	Differential geometry
Height of a prime ideal	Concept	Commutative algebra
Schrödinger operator	Concept	Ordinary differential equations
Diagonally dominant matrix	Concept	Linear and multilinear algebra; matrix theory
Tracy–Widom distribution	Concept	Probability theory and stochastic processes
Separably closed field	Concept	Field theory and polynomials
Approximation property	Concept	Functional analysis
Borel summation	Concept	Sequences, series, summability
Projective hierarchy	Concept	Mathematical logic and foundations
Principal bundle	Concept	Algebraic topology
Painlevé property	Concept	Ordinary differential equations
WZ theory	Concept	Combinatorics
Logarithmically convex function	Concept	Real functions
Commuting matrices	Concept	Linear and multilinear algebra; matrix theory
Rational homotopy theory	Concept	Algebraic topology
Lévy–Prokhorov metric	Concept	Probability theory and stochastic processes
4-manifold	Concept	Manifolds and cell complexes
BK-space	Concept	Functional analysis
Associated graded ring	Concept	Commutative algebra
Crossed product	Concept	Functional analysis
Almost convergence	Concept	Sequences, series, summability
Fredholm operator	Concept	Operator theory
Graded ring	Concept	Commutative algebra
Symplectic capacity	Concept	Differential geometry
Formally smooth map	Concept	Commutative algebra
F-sigma set	Concept	General topology
Dirichlet series	Concept	Number theory
Homotopy group with coefficients	Concept	Algebraic topology
Lévy process	Concept	Probability theory and stochastic processes
Kolmogorov complexity	Concept	Computer science
Total variation	Concept	Real functions
Paracompact space	Concept	General topology
Bergman kernel	Concept	Functions of a complex variable
Zariski topology	Concept	Algebraic geometry
MV-algebra	Concept	Order, lattices, ordered algebraic structures
Markov chain mixing time	Concept	Probability theory and stochastic processes
Elementary substructure	Concept	Mathematical logic and foundations
Summability method	Concept	Sequences, series, summability
Derived set	Concept	General topology
Orientation of a manifold	Concept	Manifolds and cell complexes
Henselization	Concept	Commutative algebra
Stanley–Reisner ring	Concept	Commutative algebra
Supercompact cardinal	Concept	Mathematical logic and foundations
Quotient of a normed space	Concept	Functional analysis
Borel functional calculus	Concept	Operator theory
Lyapunov equation	Concept	Linear and multilinear algebra; matrix theory
Pseudo algebraically closed field	Concept	Field theory and polynomials
Theory	Concept	Mathematical logic and foundations
Morse homology	Concept	Manifolds and cell complexes
Semi-continuity	Concept	Real functions
Cauchy matrix	Concept	Linear and multilinear algebra; matrix theory
System of parameters	Concept	Commutative algebra
Purely inseparable extension	Concept	Field theory and polynomials
Sub-Riemannian manifold	Concept	Differential geometry
Exponential sum	Concept	Number theory
Structure	Concept	Mathematical logic and foundations
Foliation	Concept	Manifolds and cell complexes
Hurwitz-stable matrix	Concept	Linear and multilinear algebra; matrix theory
Pettis integral	Concept	Measure and integration
Jacobi field	Concept	Differential geometry
Thurston norm	Concept	Manifolds and cell complexes
Subderivative	Concept	Real functions
Dirichlet L-function	Concept	Number theory
Incidence matrix	Concept	Combinatorics
Cumulant	Concept	Probability theory and stochastic processes
Drazin inverse	Concept	Linear and multilinear algebra; matrix theory
Calabi flow	Concept	Differential geometry
Laplace's method	Concept	Approximations and expansions
Loewner order	Concept	Linear and multilinear algebra; matrix theory
Idele class group	Concept	Number theory
Completely normal space	Concept	General topology
Diffusion process	Concept	Probability theory and stochastic processes
Pontryagin–Thom construction	Concept	Manifolds and cell complexes
Beltrami equation	Concept	Functions of a complex variable
Banach manifold	Concept	Global analysis, analysis on manifolds
Second fundamental form	Concept	Differential geometry
Galois cohomology	Concept	Field theory and polynomials
Blaschke product	Concept	Functions of a complex variable
Exponential type	Concept	Functions of a complex variable
Elimination theory	Concept	Commutative algebra
Potential theory	Concept	Potential theory
Field with one element	Concept	Algebraic geometry
Polycyclic group	Concept	Group theory and generalizations
Subfactor	Concept	Functional analysis
Almost complex manifold	Concept	Differential geometry
Handle decomposition	Concept	Manifolds and cell complexes
Seifert fiber space	Concept	Manifolds and cell complexes
Type	Concept	Mathematical logic and foundations
Spectral radius	Concept	Linear and multilinear algebra; matrix theory
Z-group	Concept	Group theory and generalizations
Homotopy	Concept	Algebraic topology
Space of functions of bounded variation	Concept	Real functions
Differential inclusion	Concept	Ordinary differential equations
Graph theory	Concept	Combinatorics
Satellite knot	Concept	Manifolds and cell complexes
Discrete valuation	Concept	Field theory and polynomials
Poisson manifold	Concept	Differential geometry
Transversality	Concept	Manifolds and cell complexes
Clifford algebra	Concept	Linear and multilinear algebra; matrix theory
Lebesgue covering dimension	Concept	General topology
Cusp form	Concept	Number theory
Uniform space	Concept	General topology
Ultrametric space	Concept	General topology
Pythagorean field	Concept	Field theory and polynomials
Core model	Concept	Mathematical logic and foundations
Schur-convex function	Concept	Real functions
Melnikov method	Concept	Ordinary differential equations
Curry–Howard correspondence	Concept	Mathematical logic and foundations
Infinite loop space	Concept	Algebraic topology
Bounded variation	Concept	Real functions
Absolute summability	Concept	Sequences, series, summability
Symplectomorphism	Concept	Differential geometry
Controllability	Concept	Systems theory; control
Condition number	Concept	Linear and multilinear algebra; matrix theory
Standard Borel space	Concept	Measure and integration
Choquet theory	Concept	Functional analysis
Landau's constants	Concept	Functions of a complex variable
Finite type algebra	Concept	Commutative algebra
Yamabe flow	Concept	Differential geometry
GCD domain	Concept	Commutative algebra
Bogdanov–Takens bifurcation	Concept	Ordinary differential equations
Weierstrass product	Concept	Functions of a complex variable