Every idea

Ideas 5401–5550 of 14183.

Name	Kind	Subject
Weighted polynomial approximation	Concept	Approximations and expansions
Dimension of an algebraic variety	Definition	Algebraic geometry
Degenerate kernel	Concept	Integral equations
Order statistic	Definition	Statistics
Schwarzschild metric	Example	Relativity and gravitational theory
Generalized convolution of an integral transform	Definition	Integral transforms, operational calculus
Rees algebra	Definition	Commutative algebra
p-adic gamma function	Definition	Number theory
Barrelled space	Definition	Functional analysis
Topological monoid	Definition	Topological groups, Lie groups
Lauricella hypergeometric series	Concept	Special functions
Abel's lemma for multiple power series	Lemma	Several complex variables and analytic spaces
Laurent phenomenon	Theorem	Commutative algebra
6-j symbol	Definition	Special functions
Laplace transform of distributions	Concept	Functional analysis
Homogeneous ideal	Concept	Commutative algebra
Tauberian condition	Concept	Sequences, series, summability
Besicovitch covering theorem	Theorem	Measure and integration
Hasse–Weil zeta function	Definition	Algebraic geometry
Riesz space	Definition	Functional analysis
Divergent asymptotic series	Example	Approximations and expansions
Schwarzian derivative	Concept	Functions of a complex variable
Volterra integro-differential equation	Definition	Integral equations
Balanced set	Definition	Functional analysis
Nine lemma	Lemma	Category theory; homological algebra
Product	Definition	Category theory; homological algebra
Orientability	Concept	Manifolds and cell complexes
Seifert fiber space	Definition	Manifolds and cell complexes
Gauge group	Object	Global analysis, analysis on manifolds
James–Stein estimator	Concept	Statistics
Summation of families over arbitrary index sets	Concept	Sequences, series, summability
Hurewicz fibration	Definition	Algebraic topology
Convergence of filters	Concept	General topology
Building	Definition	Group theory and generalizations
Jónsson–Tarski algebra	Example	General algebraic systems
Inverse iteration	Theorem	Numerical analysis
Virtual knot	Concept	Manifolds and cell complexes
Kernel regression	Concept	Statistics
Entropic algebra	Definition	General algebraic systems
Ginzburg–Landau equation	Concept	Partial differential equations
Dirichlet process	Definition	Probability theory and stochastic processes
Alexandrov space	Concept	Differential geometry
FK-space	Concept	Functional analysis
Sparse matrix	Definition	Numerical analysis
Massey product	Definition	Algebraic topology
Polytope combinatorics	Definition	Convex and discrete geometry
Kiefer–Wolfowitz equivalence theorem	Theorem	Statistics
Table of Lie groups	Example	Topological groups, Lie groups
Immersed boundary method	Concept	Numerical analysis
Polarity	Concept	Geometry
Kontsevich integral	Concept	Manifolds and cell complexes
Fully invariant congruence	Definition	General algebraic systems
Global dimension	Definition	Commutative algebra
Ternary discriminator	Concept	General algebraic systems
Equational logic	Concept	General algebraic systems
Absolute neighborhood retract	Definition	General topology
Jacobi transform	Concept	Integral transforms, operational calculus
Bounded lattice	Concept	Order, lattices, ordered algebraic structures
Splitting of prime ideals	Definition	Number theory
Explicit formula	Theorem	Number theory
Randomization	Concept	Statistics
Fredholm property of elliptic operators	Theorem	Global analysis, analysis on manifolds
Lattice of clones	Definition	General algebraic systems
Hawaiian earring	Example	Algebraic topology
Flat module	Concept	Commutative algebra
Elliptic surface	Definition	Algebraic geometry
Five-point stencil	Concept	Numerical analysis
Pick matrix	Definition	Functions of a complex variable
Enneper surface	Example	Differential geometry
Field trace	Definition	Field theory and polynomials
Hardy–Littlewood maximal function	Definition	Harmonic analysis on Euclidean spaces
Unitary representation	Concept	Topological groups, Lie groups
Linear canonical transformation	Concept	Integral transforms, operational calculus
Euler–Poisson equation for higher derivatives	Definition	Calculus of variations and optimal control; optimization
Eulerian poset	Definition	Order, lattices, ordered algebraic structures
Continuous multiplication	Definition	Topological groups, Lie groups
NIP theory	Concept	Mathematical logic and foundations
Lebesgue decomposition theorem	Theorem	Measure and integration
Semilattice	Concept	Order, lattices, ordered algebraic structures
Strong Cesàro summability	Concept	Sequences, series, summability
Finite difference coefficients	Concept	Numerical analysis
Turing machine	Concept	Mathematical logic and foundations
Summation in topological groups	Definition	Sequences, series, summability
Advanced Z-transform	Definition	Integral transforms, operational calculus
Geometric lattice	Definition	Order, lattices, ordered algebraic structures
Iterated function system	Concept	Measure and integration
Complete Boolean algebra	Concept	Order, lattices, ordered algebraic structures
Cofinal subset	Definition	Order, lattices, ordered algebraic structures
Classical group	Concept	Group theory and generalizations
Lindley's paradox	Counterexample	Statistics
Real Hardy space H1	Concept	Harmonic analysis on Euclidean spaces
Padé approximant	Definition	Approximations and expansions
Dirichlet conditions	Theorem	Harmonic analysis on Euclidean spaces
Egorov's theorem	Theorem	Measure and integration
Finitely presented algebra	Concept	Commutative algebra
Trigonometric interpolation	Definition	Harmonic analysis on Euclidean spaces
Splitting circle method	Theorem	Numerical analysis
Projection operation	Concept	General algebraic systems
Residually finite algebra	Definition	General algebraic systems
Cellular algebra	Concept	Associative rings and algebras
Rational approximation	Definition	Approximations and expansions
Tychonoff space	Definition	General topology
Solution of recurrences by generating functions	Definition	Difference and functional equations
Positive operator	Concept	Operator theory
Real closure	Concept	Field theory and polynomials
Model theory of algebraically closed fields	Definition	Field theory and polynomials
Nerve of a category	Definition	Category theory; homological algebra
Kelvin functions	Concept	Special functions
Universally measurable set	Definition	Measure and integration
Point process	Definition	Probability theory and stochastic processes
Coupled map lattice	Concept	Dynamical systems and ergodic theory
Künneth theorem	Theorem	Algebraic topology
Orders of the elements of the integers modulo 6	Example	Group theory and generalizations
Multivariate approximation	Definition	Approximations and expansions
Product measure	Concept	Measure and integration
Capacity and Hausdorff dimension	Theorem	Potential theory
Complete local ring	Definition	Commutative algebra
Fundamental theorem of Riemannian geometry	Theorem	Differential geometry
Calderón–Zygmund kernel	Concept	Harmonic analysis on Euclidean spaces
Jordan's theorem on primitive groups containing a prime cycle	Theorem	Group theory and generalizations
Artin reciprocity law	Theorem	Number theory
Riemann curvature tensor	Definition	Differential geometry
Annihilator method	Concept	Ordinary differential equations
Summability field of a matrix method	Concept	Sequences, series, summability
Gelfand–Naimark–Segal construction	Definition	Functional analysis
Falling and rising factorials	Definition	Combinatorics
Space of functions vanishing at infinity	Definition	Functional analysis
M-estimator	Definition	Statistics
Kohn–Rossi cohomology	Definition	Several complex variables and analytic spaces
Rogers–Ramanujan continued fraction	Concept	Number theory
Restricted isometry property	Definition	Information and communication theory, circuits
Witt group	Definition	Number theory
Weak dimension	Definition	Associative rings and algebras
Morse–Smale system	Concept	Dynamical systems and ergodic theory
Oka–Weil theorem	Theorem	Several complex variables and analytic spaces
Oval	Concept	Geometry
Brouwer–Heyting–Kolmogorov interpretation	Concept	Mathematical logic and foundations
Euler transform	Definition	Sequences, series, summability
Darboux function	Concept	Real functions
p-harmonic function	Concept	Potential theory
Steiner system	Concept	Combinatorics
Fixed-point iteration	Definition	Operator theory
Harnack inequality for parabolic equations	Theorem	Partial differential equations
Einstein field equations	Definition	Relativity and gravitational theory
Nonlinear difference equation	Concept	Difference and functional equations
Chebyshev polynomials of the second kind	Concept	Special functions
Riemannian manifold	Concept	Differential geometry
Modified Richardson iteration	Theorem	Numerical analysis
Subalgebra	Concept	Associative rings and algebras
Theta function	Definition	Number theory