Every idea

Ideas 7051–7200 of 14183.

Name	Kind	Subject
Bring radical	Definition	Field theory and polynomials
Von Neumann bicommutant theorem	Theorem	Functional analysis
Nonlinear integral equation	Concept	Integral equations
Arnold's cat map	Example	Dynamical systems and ergodic theory
Bring radical	Concept	Field theory and polynomials
Fundamental solution of the Laplacian	Concept	Partial differential equations
Abel equation	Definition	Difference and functional equations
Tilting theory	Definition	Associative rings and algebras
Spherical geometry	Definition	Geometry
Place (number field)	Concept	Number theory
p-adic number	Concept	Field theory and polynomials
Initial algebra semantics	Definition	General algebraic systems
Wythoff construction	Definition	Geometry
Projective special linear group	Example	Group theory and generalizations
Soul theorem	Theorem	Differential geometry
Landau's constants	Definition	Functions of a complex variable
Implicit function theorem in Banach spaces	Theorem	Global analysis, analysis on manifolds
Inversion of the Weierstrass transform	Theorem	Integral transforms, operational calculus
Totally positive matrix	Definition	Linear and multilinear algebra; matrix theory
First fundamental form	Definition	Differential geometry
Lattice in a Lie group	Concept	Topological groups, Lie groups
Reduction modulo n is a homomorphism	Example	Group theory and generalizations
Biorthogonal wavelet	Definition	Harmonic analysis on Euclidean spaces
Discriminator variety	Definition	General algebraic systems
Value function	Definition	Calculus of variations and optimal control; optimization
Euler product for multiplicative functions	Theorem	Number theory
Wiener filter equation	Example	Probability theory and stochastic processes
Central difference	Concept	Difference and functional equations
Bloch–Wigner function	Definition	Special functions
Exposed point	Definition	Convex and discrete geometry
Difference algebra	Definition	Field theory and polynomials
Manifold of smooth mappings	Concept	Global analysis, analysis on manifolds
Lattice in a locally compact group	Definition	Topological groups, Lie groups
Ultraweak topology	Definition	Functional analysis
Automatic differentiation	Concept	Numerical analysis
Melnikov method	Definition	Ordinary differential equations
Watson's lemma	Lemma	Approximations and expansions
Connected sum	Definition	Manifolds and cell complexes
Locally convex space	Definition	Functional analysis
Monadic functor	Definition	Category theory; homological algebra
Centerpoint theorem	Theorem	Convex and discrete geometry
Excessive function	Definition	Probability theory and stochastic processes
Aberth method	Theorem	Numerical analysis
Decreasing rearrangement	Concept	Functional analysis
Covering density	Concept	Convex and discrete geometry
q-difference equation	Definition	Difference and functional equations
Hardy's Tauberian theorem for Cesàro means	Theorem	Sequences, series, summability
Upper set	Definition	Order, lattices, ordered algebraic structures
Wiman–Valiron theory	Concept	Functions of a complex variable
Infinitely divisible distribution	Concept	Probability theory and stochastic processes
Linear multistep method	Concept	Numerical analysis
Gross–Zagier theorem	Theorem	Number theory
Semialgebraic set	Concept	Algebraic geometry
Absolutely convergent Fourier series	Definition	Harmonic analysis on Euclidean spaces
Dirac bundle	Definition	Differential geometry
Mehler–Heine formula	Theorem	Special functions
Bernoulli polynomials	Object	Number theory
Regular summability method	Definition	Sequences, series, summability
Sub-mean value property	Proposition	Potential theory
Lorentzian manifold	Concept	Differential geometry
Erdős–Kac theorem	Theorem	Number theory
Positive current	Concept	Several complex variables and analytic spaces
Wiener–Hopf factorization	Theorem	Integral equations
Dominated convergence theorem	Theorem	Measure and integration
Grönwall area theorem	Theorem	Functions of a complex variable
Poincaré's functional equation	Definition	Difference and functional equations
Cayley–Bacharach theorem	Theorem	Algebraic geometry
Sperner property	Definition	Order, lattices, ordered algebraic structures
Biproduct	Concept	Category theory; homological algebra
Mordell's theorem	Theorem	Number theory
Particle filter	Concept	Statistics
Larson–Sweedler theorem	Theorem	Associative rings and algebras
Rado's theorem	Theorem	Combinatorics
Uniform polytope	Concept	Geometry
Scaling function and refinement equation	Definition	Harmonic analysis on Euclidean spaces
Figure-eight knot	Example	Manifolds and cell complexes
Vinogradov's theorem	Theorem	Number theory
Cobordism ring	Concept	Manifolds and cell complexes
Sine and cosine transforms	Concept	Harmonic analysis on Euclidean spaces
q-exponential	Definition	Combinatorics
Error of best approximation	Definition	Approximations and expansions
Meijer G-function transforms	Concept	Integral transforms, operational calculus
Polynomial identity ring	Concept	Associative rings and algebras
Zero object	Definition	Category theory; homological algebra
Stable ∞-category	Definition	Category theory; homological algebra
Fatou set	Concept	Dynamical systems and ergodic theory
Brahmagupta's formula	Theorem	Geometry
Moment map	Definition	Differential geometry
Shanks transformation	Concept	Numerical analysis
Stieltjes inversion formula	Theorem	Integral transforms, operational calculus
Associated Legendre polynomials	Definition	Special functions
Pro-p group	Concept	Group theory and generalizations
Proof-theoretic ordinal	Definition	Mathematical logic and foundations
Elliptic boundary value problem	Concept	Partial differential equations
Covariant derivative	Definition	Differential geometry
Semimodular lattice	Concept	Order, lattices, ordered algebraic structures
Complete intersection ring	Definition	Commutative algebra
Bredon cohomology	Definition	Algebraic topology
Helgason support theorem	Theorem	Integral transforms, operational calculus
Hilbert's sixteenth problem	Problem	Algebraic geometry
Blaschke product	Definition	Functions of a complex variable
Schottky problem	Problem	Algebraic geometry
Mittag-Leffler star	Concept	Functions of a complex variable
Summability field of a matrix method	Definition	Sequences, series, summability
Strongly regular graph	Concept	Combinatorics
Parametrix	Definition	Global analysis, analysis on manifolds
Tauberian condition	Definition	Sequences, series, summability
Random group	Definition	Group theory and generalizations
Intrinsic volume	Concept	Convex and discrete geometry
Wedge sum	Definition	General topology
Borel–Ritt theorem	Theorem	Functions of a complex variable
Nilpotent ideal	Concept	Associative rings and algebras
Dimension of an analytic set	Definition	Several complex variables and analytic spaces
Cohomology operation	Definition	Algebraic topology
Kuramoto model	Example	Ordinary differential equations
Faithfully flat module	Concept	Commutative algebra
Association scheme	Concept	Combinatorics
Kazhdan–Margulis theorem	Theorem	Topological groups, Lie groups
Trace class operator	Definition	Operator theory
Indeterminate moment problem	Definition	Integral transforms, operational calculus
Vitali convergence theorem	Theorem	Measure and integration
Landau–Kolmogorov inequality	Theorem	Real functions
Weak derivative	Concept	Functional analysis
Natural transformation	Definition	Category theory; homological algebra
Modal logic	Concept	Mathematical logic and foundations
Infinitesimal stability	Concept	Global analysis, analysis on manifolds
Stable theory	Definition	Mathematical logic and foundations
Matched Z-transform method	Concept	Systems theory; control
Time-scale calculus	Definition	Real functions
Multivariate interpolation	Definition	Approximations and expansions
Observability	Concept	Systems theory; control
Blowing up	Concept	Algebraic geometry
Canonical height	Concept	Dynamical systems and ergodic theory
Differentiable curve	Concept	Differential geometry
Classical ring of quotients	Concept	Associative rings and algebras
Cone	Definition	Category theory; homological algebra
Ordinal analysis	Concept	Mathematical logic and foundations
Hamiltonian vector field	Concept	Differential geometry
Pseudorandom number generator	Concept	Numerical analysis
Adaptive mesh refinement	Definition	Numerical analysis
Projective determinacy	Definition	Mathematical logic and foundations
Tychonoff space	Concept	General topology
Covering density	Definition	Convex and discrete geometry
Milstein method	Theorem	Numerical analysis
Localization of a Noetherian ring is Noetherian	Proposition	Commutative algebra
Latent variable model	Concept	Statistics
Algebraic logic	Definition	Mathematical logic and foundations
Potential operator of a Markov process	Definition	Probability theory and stochastic processes
Scott continuity	Concept	Order, lattices, ordered algebraic structures
M3–N5 characterization of distributivity	Theorem	Order, lattices, ordered algebraic structures