Concepts

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

Ideas 1051–1200 of 2778.

Name	Kind	Subject
Boolean algebra	Concept	Order, lattices, ordered algebraic structures
Simple continued fraction	Concept	Number theory
Poisson distribution	Concept	Probability theory and stochastic processes
Negative binomial distribution	Concept	Probability theory and stochastic processes
Trace of a matrix	Concept	Linear and multilinear algebra; matrix theory
Cantor's diagonal argument	Concept	Mathematical logic and foundations
Rational function	Concept	Real functions
Meagre set	Concept	General topology
Archimedean ordered field	Concept	Field theory and polynomials
Derangement	Concept	Combinatorics
K-colourable graph	Concept	Combinatorics
Orthogonal complement	Concept	Linear and multilinear algebra; matrix theory
Order of a differential equation	Concept	Ordinary differential equations
Length of a vector	Concept	Geometry
Sieve of Eratosthenes	Concept	Number theory
Semigroup	Concept	Group theory and generalizations
Multivariate normal distribution	Concept	Statistics
Equicontinuity	Concept	General topology
Cofactor	Concept	Linear and multilinear algebra; matrix theory
Spectrum of a matrix	Concept	Linear and multilinear algebra; matrix theory
Greatest element	Concept	Order, lattices, ordered algebraic structures
Method of undetermined coefficients	Concept	Ordinary differential equations
Farey sequence	Concept	Number theory
Cluster point of a sequence	Concept	Sequences, series, summability
Galois group	Concept	Field theory and polynomials
Composition series	Concept	Group theory and generalizations
Unit of a ring	Concept	Associative rings and algebras
Upper central series	Concept	Group theory and generalizations
Median of a triangle	Concept	Geometry
Factorial	Concept	Combinatorics
Direct sum of subspaces	Concept	Linear and multilinear algebra; matrix theory
Disjoint sets	Concept	Mathematical logic and foundations
Rooted tree	Concept	Combinatorics
Modus ponens	Concept	Mathematical logic and foundations
Orthogonal vectors	Concept	Linear and multilinear algebra; matrix theory
Series of functions	Concept	Sequences, series, summability
Variation of parameters	Concept	Ordinary differential equations
Matrix addition	Concept	Linear and multilinear algebra; matrix theory
Sequence of functions	Concept	Sequences, series, summability
Characteristic polynomial of a linear recurrence	Concept	Difference and functional equations
Mersenne number	Concept	Number theory
Cayley table	Concept	Group theory and generalizations
Absolute convergence	Concept	Sequences, series, summability
Open map	Concept	General topology
Open ball	Concept	General topology
Similar triangles	Concept	Geometry
Normaliser	Concept	Group theory and generalizations
Affine span	Concept	Geometry
Irreducible element	Concept	Commutative algebra
Simple group	Concept	Group theory and generalizations
Orbit	Concept	Group theory and generalizations
Matrix of a linear map	Concept	Linear and multilinear algebra; matrix theory
Ordinal number	Concept	Mathematical logic and foundations
Critical point	Concept	Real functions
Dyck word	Concept	Computer science
Root of unity	Concept	Number theory
Metric topology	Concept	General topology
Skewness	Concept	Statistics
Catalan numbers	Concept	Combinatorics
Moore–Penrose inverse	Concept	Linear and multilinear algebra; matrix theory
Conformal map	Concept	Functions of a complex variable
Cycle	Concept	Combinatorics
Pell's equation	Concept	Number theory
Separable space	Concept	General topology
Intermediate field	Concept	Field theory and polynomials
Taylor series	Concept	Approximations and expansions
Alternating group	Concept	Group theory and generalizations
Computing the inverse by row reduction	Concept	Linear and multilinear algebra; matrix theory
Trial division	Concept	Number theory
Greatest common divisor in an integral domain	Concept	Commutative algebra
Memorylessness	Concept	Probability theory and stochastic processes
Nilpotent element	Concept	Associative rings and algebras
Pairwise independence	Concept	Probability theory and stochastic processes
Rank of a matrix	Concept	Linear and multilinear algebra; matrix theory
Closed set	Concept	General topology
Jacobian determinant	Concept	Real functions
Companion matrix	Concept	Linear and multilinear algebra; matrix theory
Neighbourhood	Concept	Combinatorics
Tangent vector of a curve	Concept	Differential geometry
Dual basis	Concept	Linear and multilinear algebra; matrix theory
Exponent of a group	Concept	Group theory and generalizations
Angle between two vectors	Concept	Geometry
Minimum degree	Concept	Combinatorics
Homothety	Concept	Geometry
Symmetry group	Concept	Group theory and generalizations
Parametrised surface	Concept	Differential geometry
Proposition	Concept	Mathematical logic and foundations
Baire space	Concept	General topology
Exterior derivative	Concept	Global analysis, analysis on manifolds
Finite-dimensional vector space	Concept	Linear and multilinear algebra; matrix theory
Cycle notation	Concept	Group theory and generalizations
Conditional probability distribution	Concept	Probability theory and stochastic processes
Intersection	Concept	Mathematical logic and foundations
Power sum symmetric polynomial	Concept	Combinatorics
Inverse element	Concept	General algebraic systems
Grönwall bound	Concept	Ordinary differential equations
Recursively defined sequence	Concept	Number theory
Closed and exact forms	Concept	Global analysis, analysis on manifolds
Law of large numbers	Concept	Probability theory and stochastic processes
Bipartite graph	Concept	Combinatorics
Isometric isomorphism	Concept	General topology
Finite field	Concept	Field theory and polynomials
Probability density function	Concept	Probability theory and stochastic processes
Taylor polynomial	Concept	Approximations and expansions
Meromorphic function	Concept	Functions of a complex variable
Subnormal series	Concept	Group theory and generalizations
Rank of a linear map	Concept	Linear and multilinear algebra; matrix theory
Cotton tensor	Concept	Differential geometry
Free probability	Concept	Functional analysis
Transcendental extension	Concept	Field theory and polynomials
Set-valued measure	Concept	Measure and integration
Regular cardinal	Concept	Mathematical logic and foundations
Rate function	Concept	Probability theory and stochastic processes
Euler–Boole summation	Concept	Numerical analysis
Schatten class	Concept	Operator theory
Piecewise linear manifold	Concept	Manifolds and cell complexes
Filter	Concept	General topology
Proper map	Concept	General topology
Ideal quotient	Concept	Commutative algebra
Tensor product of algebras	Concept	Commutative algebra
Lebesgue point	Concept	Measure and integration
Link	Concept	Manifolds and cell complexes
n-connected space	Concept	Algebraic topology
Knot concordance	Concept	Manifolds and cell complexes
Tate cohomology	Concept	Group theory and generalizations
Malliavin calculus	Concept	Probability theory and stochastic processes
Nevanlinna theory	Concept	Functions of a complex variable
Integral element	Concept	Commutative algebra
Eckmann–Hilton duality	Concept	Algebraic topology
Hybrid system	Concept	Ordinary differential equations
Padé approximant	Concept	Approximations and expansions
CAT(k) space	Concept	Differential geometry
Polynomial function	Concept	Real functions
Spectrum	Concept	Algebraic topology
Spin(7)-manifold	Concept	Differential geometry
Non-Archimedean absolute value	Concept	Field theory and polynomials
Congruence subgroup	Concept	Number theory
Permutation pattern	Concept	Combinatorics
Incidence algebra	Concept	Order, lattices, ordered algebraic structures
Universal bundle	Concept	Algebraic topology
Logical consequence	Concept	Mathematical logic and foundations
Random matrix	Concept	Linear and multilinear algebra; matrix theory
Twelvefold way	Concept	Combinatorics
Feedback linearization	Concept	Systems theory; control
Categorical theory	Concept	Mathematical logic and foundations
Cylindric algebra	Concept	Mathematical logic and foundations
Hilbert system	Concept	Mathematical logic and foundations
Finite morphism of rings	Concept	Commutative algebra
Radon–Nikodym derivative	Concept	Measure and integration
Initial topology	Concept	General topology