Concepts

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

Ideas 901–1050 of 2778.

Name	Kind	Subject
Upper bound	Concept	Order, lattices, ordered algebraic structures
Biconditional	Concept	Mathematical logic and foundations
Confidence interval	Concept	Statistics
Midpoint	Concept	Geometry
Indeterminate form	Concept	Real functions
External direct sum	Concept	Linear and multilinear algebra; matrix theory
Chain	Concept	Order, lattices, ordered algebraic structures
Orthonormal basis	Concept	Linear and multilinear algebra; matrix theory
Polynomial ring	Concept	Commutative algebra
Möbius transformation	Concept	Functions of a complex variable
Falling factorial	Concept	Combinatorics
General solution and particular solution	Concept	Ordinary differential equations
Connected set	Concept	General topology
Refinement of a partition	Concept	Real functions
Even and odd permutations	Concept	Group theory and generalizations
Parallelepiped	Concept	Geometry
Bilinear form	Concept	Linear and multilinear algebra; matrix theory
Convergence in distribution	Concept	Probability theory and stochastic processes
Estimator	Concept	Statistics
Almost surely	Concept	Probability theory and stochastic processes
Sigma-algebra	Concept	Measure and integration
Principal ideal	Concept	Commutative algebra
Linear equation with constant coefficients	Concept	Ordinary differential equations
Sample space	Concept	Probability theory and stochastic processes
Acyclic graph	Concept	Combinatorics
Cauchy principal value	Concept	Real functions
Miller–Rabin primality test	Concept	Number theory
Phase portrait	Concept	Ordinary differential equations
Limit superior	Concept	Sequences, series, summability
Frobenius endomorphism	Concept	Commutative algebra
Augmented matrix	Concept	Linear and multilinear algebra; matrix theory
Tangent line to a circle	Concept	Geometry
Bernoulli equation	Concept	Ordinary differential equations
Orientable surface	Concept	Differential geometry
Big O notation	Concept	Approximations and expansions
Arc length	Concept	Real functions
Function composition	Concept	Mathematical logic and foundations
Conditional independence	Concept	Probability theory and stochastic processes
Cylindrical coordinates	Concept	Geometry
Bell numbers	Concept	Number theory
Set-builder notation	Concept	Mathematical logic and foundations
Powers of a diagonalisable matrix	Concept	Linear and multilinear algebra; matrix theory
Prime subfield	Concept	Field theory and polynomials
Euclidean algorithm	Concept	Number theory
Conditional expectation	Concept	Probability theory and stochastic processes
Compact space	Concept	General topology
Integration over a non-rectangular region	Concept	Real functions
Primitive polynomial	Concept	Commutative algebra
Principal part	Concept	Functions of a complex variable
Connected space	Concept	General topology
Derivative	Concept	Real functions
Norm	Concept	Functional analysis
Smooth function	Concept	Real functions
Plane	Concept	Geometry
Laplace transform	Concept	Integral transforms, operational calculus
Vacuous truth	Concept	Mathematical logic and foundations
Characteristic function	Concept	Probability theory and stochastic processes
Leading coefficient	Concept	Commutative algebra
Regular curve	Concept	Differential geometry
Covariance matrix	Concept	Statistics
Linear combination	Concept	Linear and multilinear algebra; matrix theory
Preorder	Concept	Order, lattices, ordered algebraic structures
Internal direct product	Concept	Group theory and generalizations
Matrix	Concept	Linear and multilinear algebra; matrix theory
Abundant number	Concept	Number theory
Continuous map	Concept	General topology
Conditional variance	Concept	Probability theory and stochastic processes
Chromatic number	Concept	Combinatorics
Symmetric polynomial	Concept	Combinatorics
Ellipse	Concept	Geometry
Metric space	Concept	General topology
Decimal expansion	Concept	Number theory
Smallest prime factor	Concept	Number theory
Sequence tending to infinity	Concept	Sequences, series, summability
Combinations with repetition	Concept	Combinatorics
Nowhere dense set	Concept	General topology
Symmetric matrix	Concept	Linear and multilinear algebra; matrix theory
Characteristic polynomial	Concept	Linear and multilinear algebra; matrix theory
Riccati equation	Concept	Ordinary differential equations
Gram–Schmidt process	Concept	Linear and multilinear algebra; matrix theory
Ring homomorphism	Concept	Associative rings and algebras
Transcendental number	Concept	Number theory
Number of divisors	Concept	Number theory
Discriminant of a polynomial	Concept	Field theory and polynomials
Continuously differentiable function	Concept	Real functions
Likelihood function	Concept	Statistics
Minimal polynomial (field theory)	Concept	Field theory and polynomials
Standard score	Concept	Statistics
Row echelon form	Concept	Linear and multilinear algebra; matrix theory
Coprime integers	Concept	Number theory
Orthogonal matrix	Concept	Linear and multilinear algebra; matrix theory
Rearrangement of a series	Concept	Sequences, series, summability
Uniform convergence on a set	Concept	Sequences, series, summability
Linear approximation	Concept	Real functions
Riemann integral	Concept	Real functions
Convergent sequence	Concept	Sequences, series, summability
Unique factorisation domain	Concept	Commutative algebra
Trail	Concept	Combinatorics
Uncountable set	Concept	Mathematical logic and foundations
Kernel of a homomorphism	Concept	Group theory and generalizations
Tangent half-angle substitution	Concept	Real functions
Branch cut	Concept	Functions of a complex variable
Fermat pseudoprime	Concept	Number theory
Equivalence class	Concept	Mathematical logic and foundations
Double integral	Concept	Real functions
Congruence modulo n	Concept	Number theory
Orthocentre	Concept	Geometry
Path-connected space	Concept	General topology
Subgraph	Concept	Combinatorics
Norm on the Gaussian integers	Concept	Number theory
Integration by partial fractions	Concept	Real functions
Proof by cases	Concept	General and overarching topics
Binomial distribution	Concept	Probability theory and stochastic processes
Separable extension	Concept	Field theory and polynomials
Group action	Concept	Group theory and generalizations
Order of an element	Concept	Group theory and generalizations
Reduced row echelon form	Concept	Linear and multilinear algebra; matrix theory
Local maximum and minimum	Concept	Real functions
Ordered pair	Concept	Mathematical logic and foundations
Inverse hyperbolic functions	Concept	Special functions
Invariant factors and elementary divisors	Concept	Group theory and generalizations
Free abelian group	Concept	Group theory and generalizations
Fermat number	Concept	Number theory
Indefinite integral	Concept	Real functions
Hyperbola	Concept	Geometry
Distance from a point to a set	Concept	General topology
Normal vector	Concept	Geometry
Expected value	Concept	Probability theory and stochastic processes
Moment-generating function	Concept	Probability theory and stochastic processes
Borel sigma-algebra	Concept	Measure and integration
Subspace topology	Concept	General topology
Image of a linear map	Concept	Linear and multilinear algebra; matrix theory
Right inverse	Concept	Mathematical logic and foundations
Iterated integral	Concept	Real functions
Boolean function	Concept	Order, lattices, ordered algebraic structures
Determinant of a linear map	Concept	Linear and multilinear algebra; matrix theory
Union	Concept	Mathematical logic and foundations
Subgroup	Concept	Group theory and generalizations
Discrete random variable	Concept	Probability theory and stochastic processes
Path component	Concept	General topology
Continuous function	Concept	Real functions
Hypergeometric distribution	Concept	Probability theory and stochastic processes
Elementary symmetric polynomial	Concept	Combinatorics
Quantile function	Concept	Probability theory and stochastic processes
Algebraic closure	Concept	Field theory and polynomials
Hyperbolic tangent	Concept	Special functions
Consistent and inconsistent systems	Concept	Linear and multilinear algebra; matrix theory
Centroid	Concept	Geometry
Reflexive relation	Concept	Mathematical logic and foundations
Space of linear maps	Concept	Linear and multilinear algebra; matrix theory