Concepts

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

Ideas 1651–1800 of 5206.

Name	Kind	Subject
Approximately finite-dimensional C*-algebra	Concept	Functional analysis
Descriptive geometry	Concept	Geometry
Starred transform	Concept	Integral transforms, operational calculus
Subvariety	Concept	General algebraic systems
Capacity of a set	Concept	Potential theory
Monotone likelihood ratio	Concept	Statistics
Holomorphic function of several variables	Concept	Several complex variables and analytic spaces
Volterra integro-differential equation	Concept	Integral equations
Loewner differential equation	Concept	Functions of a complex variable
Rademacher functions	Concept	Harmonic analysis on Euclidean spaces
Legendre integral transform	Concept	Integral transforms, operational calculus
Birational geometry	Concept	Algebraic geometry
Selberg sieve	Concept	Number theory
Fredholm integral equation	Concept	Integral equations
Unisolvent point set	Concept	Approximations and expansions
Schauder basis	Concept	Functional analysis
Koenigs function	Concept	Functions of a complex variable
Hermite functions	Concept	Special functions
Stable homotopy theory	Concept	Algebraic topology
Matrix norm	Concept	Linear and multilinear algebra; matrix theory
Geodesic curvature	Concept	Differential geometry
Measure-preserving transformation	Concept	Measure and integration
Numerical methods for ordinary differential equations	Concept	Numerical analysis
Rational surface	Concept	Algebraic geometry
Numerical diffusion	Concept	Numerical analysis
Well-founded order	Concept	Order, lattices, ordered algebraic structures
Wright omega function	Concept	Special functions
Coset	Concept
Indecomposable continuum	Concept	General topology
Empirical risk minimization	Concept	Computer science
Coherent sheaf	Concept	Algebraic geometry
Similarity solution	Concept	Partial differential equations
Continuous wavelet transform	Concept	Harmonic analysis on Euclidean spaces
Robin boundary condition	Concept	Ordinary differential equations
Polish space	Concept	General topology
Trajectory optimization	Concept	Calculus of variations and optimal control; optimization
Neville's algorithm	Concept	Numerical analysis
Order statistic	Concept	Statistics
Potential operator of a Markov process	Concept	Probability theory and stochastic processes
Littlewood polynomial	Concept	Harmonic analysis on Euclidean spaces
Scheme	Concept	Algebraic geometry
Discrete-time dynamical system	Concept	Dynamical systems and ergodic theory
Extension and contraction of ideals	Concept	Commutative algebra
Killing vector field	Concept	Differential geometry
Microlocal analysis	Concept	Partial differential equations
First variation	Concept	Calculus of variations and optimal control; optimization
FBI transform	Concept	Partial differential equations
Neutral differential equation	Concept	Ordinary differential equations
Pixley term	Concept	General algebraic systems
Continuous geometry	Concept	Order, lattices, ordered algebraic structures
Torsor	Concept	Algebraic geometry
Complex cobordism	Concept	Algebraic topology
Differential dynamic programming	Concept	Calculus of variations and optimal control; optimization
Determinant line bundle	Concept	Global analysis, analysis on manifolds
Harmonic analysis on groups	Concept	Abstract harmonic analysis
Wave equation	Concept	Partial differential equations
Saddle point of a Lagrangian	Concept	Operations research, mathematical programming
Semiprime ring	Concept	Associative rings and algebras
Classification of second-order PDEs	Concept	Partial differential equations
Grothendieck group	Concept	K-theory
Haagerup property	Concept	Topological groups, Lie groups
Z-transform	Concept	Integral transforms, operational calculus
Covariant derivative	Concept	Differential geometry
Totally positive matrix	Concept	Linear and multilinear algebra; matrix theory
Algebraic K-theory	Concept	Associative rings and algebras
Lattice ideal	Concept	Order, lattices, ordered algebraic structures
Extensive category	Concept	Category theory; homological algebra
Wiener algebra	Concept	Harmonic analysis on Euclidean spaces
Central simple algebra	Concept	Associative rings and algebras
Weierstrass transform	Concept	Integral transforms, operational calculus
Hecke algebra	Concept	Group theory and generalizations
Spectral graph theory	Concept	Combinatorics
de Boor's algorithm	Concept	Numerical analysis
Wedge sum	Concept	General topology
Borel subgroup	Concept	Group theory and generalizations
Finite Hilbert transform	Concept	Integral transforms, operational calculus
Riemann surface	Concept	Functions of a complex variable
Majorization	Concept	Real functions
Bromwich integral	Concept	Integral transforms, operational calculus
Essential extension	Concept	General algebraic systems
Fractional iteration	Concept	Difference and functional equations
Julia set	Concept	Dynamical systems and ergodic theory
Flat morphism	Concept	Algebraic geometry
Discrete subgroup	Concept	Topological groups, Lie groups
Weak dimension	Concept	Associative rings and algebras
Thom space	Concept	Algebraic topology
Statistical learning theory	Concept	Computer science
Left ideal	Concept	Associative rings and algebras
Riesz potential operator	Concept	Operator theory
Ruled surface	Concept	Algebraic geometry
Fourier coefficient	Concept	Harmonic analysis on Euclidean spaces
Rounding	Concept	Numerical analysis
Primitive recursive function	Concept	Mathematical logic and foundations
Hierarchical matrix	Concept	Numerical analysis
Knot Floer homology	Concept	Manifolds and cell complexes
Discrete Painlevé equations	Concept	Difference and functional equations
Logicism	Concept	Mathematical logic and foundations
Eulerian number	Concept	Combinatorics
Fourier transform of tempered distributions	Concept	Functional analysis
De Morgan algebra	Concept	Order, lattices, ordered algebraic structures
Bilinear interpolation	Concept	Numerical analysis
Injective object	Concept	Category theory; homological algebra
Cellular automaton	Concept	Dynamical systems and ergodic theory
Finsler manifold	Concept	Differential geometry
Homogenization	Concept	Partial differential equations
Symmetric monoidal category	Concept	Category theory; homological algebra
Hyperelliptic curve	Concept	Algebraic geometry
Atomic lattice	Concept	Order, lattices, ordered algebraic structures
L-curve	Concept	Numerical analysis
Saccheri quadrilateral	Concept	Geometry
Derived category	Concept	Category theory; homological algebra
Completely distributive lattice	Concept	Order, lattices, ordered algebraic structures
Gegenbauer polynomials	Concept	Special functions
Hamilton–Jacobi equation	Concept	Partial differential equations
Numerical continuation	Concept	Numerical analysis
Siegel zero	Concept	Number theory
Trigamma function	Concept	Special functions
Homotopy continuation for polynomial systems	Concept	Numerical analysis
Virtual fundamental class	Concept	Differential geometry
CW complex	Concept	Manifolds and cell complexes
Universally catenary ring	Concept	Commutative algebra
Semitopological group	Concept	Topological groups, Lie groups
Perverse sheaf	Concept	Several complex variables and analytic spaces
Brjuno number	Concept	Dynamical systems and ergodic theory
Maximum and minimum	Concept	Real functions
Topological dynamics	Concept	Dynamical systems and ergodic theory
Fourier–Stieltjes transform	Concept	Harmonic analysis on Euclidean spaces
Inverse mean curvature flow	Concept	Differential geometry
Oscillation of a function	Concept	Real functions
String diagram	Concept	Category theory; homological algebra
Rayleigh–Ritz method	Concept	Calculus of variations and optimal control; optimization
Connection on a vector bundle	Concept	Differential geometry
Identifiability	Concept	Statistics
Regular surface	Concept	Differential geometry
Strict partial order	Concept	Order, lattices, ordered algebraic structures
Generator of a semigroup	Concept	Operator theory
Turing jump	Concept	Mathematical logic and foundations
Poincaré map	Concept	Dynamical systems and ergodic theory
Harmonic at a point	Concept	Potential theory
Discrete calculus	Concept	Difference and functional equations
Subshift of finite type	Concept	Dynamical systems and ergodic theory
Perfect set	Concept	General topology
B-spline	Concept	Approximations and expansions
Strictly convex set	Concept	Convex and discrete geometry
Simple ring	Concept	Associative rings and algebras
Global field	Concept	Number theory
Soliton	Concept	Partial differential equations
Square root of a matrix	Concept	Linear and multilinear algebra; matrix theory
Distributive property	Concept	General algebraic systems
Modular function	Concept	Topological groups, Lie groups