Concepts

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

Ideas 301–450 of 2778.

Name	Kind	Subject
Identically distributed random variables	Concept	Probability theory and stochastic processes
Eigenvalue method for linear systems	Concept	Ordinary differential equations
Convergence of a sequence in a metric space	Concept	General topology
Arithmetic function	Concept	Number theory
Real exponentiation	Concept	Real functions
Metrizable space	Concept	General topology
Geometric probability	Concept	Probability theory and stochastic processes
Congruent triangles	Concept	Geometry
Mesh of a partition	Concept	Real functions
Multiplication by a matrix as a linear map	Concept	Linear and multilinear algebra; matrix theory
Extended Euclidean algorithm	Concept	Number theory
Young diagram	Concept	Combinatorics
Ideal	Concept	Commutative algebra
Central moment	Concept	Probability theory and stochastic processes
Gauss–Jordan elimination	Concept	Linear and multilinear algebra; matrix theory
Combination	Concept	Combinatorics
Conditional probability	Concept	Probability theory and stochastic processes
Commutativity	Concept	General algebraic systems
Space of solutions of a linear recurrence	Concept	Difference and functional equations
Geometric multiplicity	Concept	Linear and multilinear algebra; matrix theory
Converse	Concept	Mathematical logic and foundations
Cross-ratio	Concept	Functions of a complex variable
Necessary and sufficient conditions	Concept	Mathematical logic and foundations
Cartesian product	Concept	Mathematical logic and foundations
Transpose	Concept	Linear and multilinear algebra; matrix theory
Complex differentiability	Concept	Functions of a complex variable
Partial derivative	Concept	Real functions
Circuit	Concept	Combinatorics
Method of moments	Concept	Statistics
Propositional logic	Concept	Mathematical logic and foundations
Injective function	Concept	Mathematical logic and foundations
Bounded set	Concept	General topology
Removable singularity	Concept	Functions of a complex variable
Partial sum	Concept	Sequences, series, summability
Student's t-distribution	Concept	Probability theory and stochastic processes
Subbasis	Concept	General topology
Equivalent metrics	Concept	General topology
Scalar multiplication of matrices	Concept	Linear and multilinear algebra; matrix theory
Singular value	Concept	Linear and multilinear algebra; matrix theory
Local minimum	Concept	Real functions
Affine space	Concept	Geometry
Linearisation at an equilibrium	Concept	Ordinary differential equations
Higher partial derivatives	Concept	Real functions
Isolated point	Concept	General topology
Convergence in mean	Concept	Probability theory and stochastic processes
Pseudometric space	Concept	General topology
Monotone function	Concept	Order, lattices, ordered algebraic structures
Bounded sequence	Concept	Sequences, series, summability
Complete ordered field	Concept	Field theory and polynomials
Chi-squared distribution	Concept	Probability theory and stochastic processes
Periodic orbit	Concept	Dynamical systems and ergodic theory
Least element	Concept	Order, lattices, ordered algebraic structures
Limit cycle	Concept	Ordinary differential equations
Almost sure convergence	Concept	Probability theory and stochastic processes
Gradient	Concept	Real functions
Dirac measure	Concept	Measure and integration
Invariant subspace	Concept	Linear and multilinear algebra; matrix theory
Jacobi symbol	Concept	Number theory
Strictly convex function	Concept	Real functions
Convergent series	Concept	Sequences, series, summability
Collinear points	Concept	Geometry
Vertex cover	Concept	Combinatorics
Generalised eigenspace	Concept	Linear and multilinear algebra; matrix theory
Step function	Concept	Real functions
Successor function	Concept	Mathematical logic and foundations
Circle integral	Concept	Functions of a complex variable
Nullity	Concept	Linear and multilinear algebra; matrix theory
Edge set	Concept	Combinatorics
Abelianisation	Concept	Group theory and generalizations
Unitary matrix	Concept	Linear and multilinear algebra; matrix theory
Continuous uniform distribution	Concept	Probability theory and stochastic processes
Consistent estimator	Concept	Statistics
Block matrix	Concept	Linear and multilinear algebra; matrix theory
Commutator subgroup	Concept	Group theory and generalizations
Annihilator of a subspace	Concept	Linear and multilinear algebra; matrix theory
Mathematical induction	Concept	Mathematical logic and foundations
Periodic function	Concept	Real functions
Back substitution	Concept	Linear and multilinear algebra; matrix theory
Lipschitz condition	Concept	Real functions
Symmetric bilinear form	Concept	Linear and multilinear algebra; matrix theory
Stabiliser	Concept	Group theory and generalizations
Product metric	Concept	General topology
Dual map	Concept	Linear and multilinear algebra; matrix theory
Equinumerous sets	Concept	Mathematical logic and foundations
Ring	Concept	Associative rings and algebras
Level set	Concept	Real functions
Conjunctive normal form	Concept	Mathematical logic and foundations
Independent sigma-algebras	Concept	Probability theory and stochastic processes
Edge colouring	Concept	Combinatorics
Chromatic polynomial	Concept	Combinatorics
Lexicographic order	Concept	Order, lattices, ordered algebraic structures
Strict differentiability	Concept	Real functions
Markov property	Concept	Probability theory and stochastic processes
Gamma distribution	Concept	Probability theory and stochastic processes
Order of a group	Concept	Group theory and generalizations
Essential singularity	Concept	Functions of a complex variable
Lattice of subgroups	Concept	Group theory and generalizations
Orthogonal projection	Concept	Linear and multilinear algebra; matrix theory
Linear isomorphism	Concept	Linear and multilinear algebra; matrix theory
Mathematical proof	Concept	General and overarching topics
Bridge	Concept	Combinatorics
Proof by contrapositive	Concept	General and overarching topics
Tensor product of vector spaces	Concept	Linear and multilinear algebra; matrix theory
Infinite limit	Concept	Real functions
Limit along different paths	Concept	Real functions
Subset	Concept	Mathematical logic and foundations
Square root of a positive semidefinite matrix	Concept	Linear and multilinear algebra; matrix theory
Uniformly Cauchy sequence of functions	Concept	Sequences, series, summability
Eigenvalue	Concept	Linear and multilinear algebra; matrix theory
Quotient space	Concept	Linear and multilinear algebra; matrix theory
Set	Concept	Mathematical logic and foundations
Dense set	Concept	General topology
Polar coordinates	Concept	Geometry
Minor	Concept	Linear and multilinear algebra; matrix theory
Bias of an estimator	Concept	Statistics
Box topology	Concept	General topology
Minimal element	Concept	Order, lattices, ordered algebraic structures
Complete metric space	Concept	General topology
Least squares	Concept	Numerical analysis
Antiderivative	Concept	Real functions
Clique	Concept	Combinatorics
Density of the normal distribution	Concept	Probability theory and stochastic processes
Finite extension	Concept	Field theory and polynomials
Family of sets	Concept	Mathematical logic and foundations
Monic polynomial	Concept	Commutative algebra
Codomain	Concept	Mathematical logic and foundations
Multigraph	Concept	Combinatorics
Normal operator	Concept	Operator theory
Greatest common divisor	Concept	Number theory
Contractive sequence	Concept	Sequences, series, summability
Altitude of a triangle	Concept	Geometry
Normal subgroup	Concept	Group theory and generalizations
Complex numbers as pairs of reals	Concept	Functions of a complex variable
Two-sided ideal	Concept	Associative rings and algebras
Work done by a force field	Concept	Real functions
Arctangent	Concept	Special functions
Modular multiplicative inverse	Concept	Number theory
Frobenius automorphism of a finite field	Concept	Field theory and polynomials
Disc of convergence	Concept	Functions of a complex variable
Euclidean domain	Concept	Commutative algebra
Principal ideal domain	Concept	Commutative algebra
Equivalent matrices	Concept	Linear and multilinear algebra; matrix theory
First-countable space	Concept	General topology
Topological space	Concept	General topology
Bernoulli process	Concept	Probability theory and stochastic processes
Linear independence	Concept	Linear and multilinear algebra; matrix theory
Complex plane	Concept	Functions of a complex variable
Triangle	Concept	Geometry
Partition function	Concept	Number theory
Annulus	Concept	Functions of a complex variable