Every idea

Ideas 15451–15600 of 19838.

Name	Kind	Subject
Absolutely monotonic function	Concept	Real functions
Triangulation	Definition	Manifolds and cell complexes
Condition number	Definition	Linear and multilinear algebra; matrix theory
Lehmann–Scheffé theorem	Theorem	Statistics
Snell's law for seismic rays	Theorem	Geophysics
Gaussian process	Definition	Probability theory and stochastic processes
Teleparallelism	Concept	Relativity and gravitational theory
Horn clause	Concept	Mathematical logic and foundations
Uniformly most powerful test	Concept	Statistics
Tamari lattice	Example	Order, lattices, ordered algebraic structures
Lyapunov exponent	Definition	Ordinary differential equations
Fractional differential equation	Definition	Ordinary differential equations
Jump diffusion model	Definition	Game theory, economics, finance, and other social and behavioral sciences
Hidden-variable theory	Concept	Quantum theory
Kompaneets equation	Concept	Astronomy and astrophysics
Lagrangian duality	Concept	Operations research, mathematical programming
Logical connective	Concept	Mathematical logic and foundations
Nonassociative algebra	Definition	Nonassociative rings and algebras
Dual groups of the integers and the real line	Example	Abstract harmonic analysis
Haken manifold	Definition	Manifolds and cell complexes
Best response	Concept	Game theory, economics, finance, and other social and behavioral sciences
Equivalence principle	Fact	Relativity and gravitational theory
Stabilizer code	Definition	Quantum theory
Jordan curve theorem for polygons	Theorem	Geometry
De Donder–Weyl theory	Definition	Mechanics of particles and systems
Packing measure	Definition	Measure and integration
Singular values of a compact operator	Concept	Operator theory
Lenagan's theorem	Theorem	Associative rings and algebras
The symmetric group S3 is not abelian	Example	Group theory and generalizations
Finite-time thermodynamics	Definition	Classical thermodynamics, heat transfer
Lorentz oscillator model	Concept	Optics, electromagnetic theory
Join	Definition	General topology
Teleparallelism	Definition	Relativity and gravitational theory
Mandelbrot set	Object	Dynamical systems and ergodic theory
Valuation ring	Concept	Commutative algebra
Quantum threshold theorem	Theorem	Quantum theory
Pincherle derivative	Definition	Operator theory
Multidimensional Laplace transform	Concept	Integral transforms, operational calculus
Shimura variety	Concept	Algebraic geometry
Truss	Definition	Mechanics of particles and systems
Seifert surface	Definition	Manifolds and cell complexes
Categorical theory	Definition	Mathematical logic and foundations
Statistical ensemble	Definition	Statistical mechanics, structure of matter
Enthalpy method for phase change	Concept	Classical thermodynamics, heat transfer
Birkhoff min-max method	Definition	Global analysis, analysis on manifolds
Survival function	Concept	Statistics
Fixed-point property of posets	Definition	Order, lattices, ordered algebraic structures
Polar motion	Concept	Geophysics
Natural boundary condition	Concept	Calculus of variations and optimal control; optimization
John–Nirenberg inequality	Theorem	Harmonic analysis on Euclidean spaces
Basis of a matroid	Concept	Combinatorics
Lattice of equational theories	Definition	General algebraic systems
Pontryagin duality theorem	Theorem	Abstract harmonic analysis
Iterative refinement	Proposition	Numerical analysis
Removable sets for bounded harmonic functions	Theorem	Potential theory
Perspectivity	Concept	Geometry
L-system	Concept	Computer science
Idempotence	Definition	General algebraic systems
Cheeger–Gromoll splitting theorem	Theorem	Differential geometry
Lebesgue–Stieltjes measure	Concept	Measure and integration
Continuous q-Hermite polynomials	Definition	Special functions
Shapley value	Concept	Game theory, economics, finance, and other social and behavioral sciences
Mahler measure	Concept	Number theory
H-infinity norm of a system	Concept	Systems theory; control
Hypersingular integral equation	Concept	Integral equations
MV-algebra	Definition	Order, lattices, ordered algebraic structures
Chemostat model	Definition	Biology and other natural sciences
Galois representation	Definition	Number theory
Airy beam	Example	Optics, electromagnetic theory
Lawson topology	Definition	Order, lattices, ordered algebraic structures
Stellar pulsation	Concept	Astronomy and astrophysics
Domain of finite type	Definition	Several complex variables and analytic spaces
Sanov's theorem	Theorem	Probability theory and stochastic processes
Cayley–Abels graph	Concept	Topological groups, Lie groups
Lorentz group	Example	Topological groups, Lie groups
Exponential functions on semigroups	Concept	Difference and functional equations
Nonemptiness of the spectrum	Theorem	Functional analysis
Quasi-primal algebra	Concept	General algebraic systems
Normal family	Definition	Functions of a complex variable
Addition formulas for Jacobi elliptic functions	Theorem	Special functions
Solvability of x^n - a	Proposition	Field theory and polynomials
Frankel conjecture	Theorem	Several complex variables and analytic spaces
Numerical stability	Definition	Numerical analysis
Modular lattice	Concept	Order, lattices, ordered algebraic structures
Invariant mass	Definition	Relativity and gravitational theory
Topological semigroup	Concept	Topological groups, Lie groups
Missing data mechanisms	Definition	Statistics
Determinacy	Concept	Mathematical logic and foundations
Holomorphically convex hull	Definition	Several complex variables and analytic spaces
Castelnuovo's rationality criterion	Theorem	Algebraic geometry
Vasicek model	Concept	Game theory, economics, finance, and other social and behavioral sciences
Optical fiber modes	Concept	Optics, electromagnetic theory
Conservative system	Definition	Dynamical systems and ergodic theory
Flory–Huggins solution theory	Definition	Statistical mechanics, structure of matter
Galaxy two-point correlation function	Concept	Astronomy and astrophysics
Polynomial-time reduction	Definition	Computer science
Theory of computation	Definition	Computer science
Convolution theorem	Theorem	Harmonic analysis on Euclidean spaces
Open subgroup	Concept	Topological groups, Lie groups
Wild knot	Counterexample	Manifolds and cell complexes
Knot	Concept	Manifolds and cell complexes
Jordan operator algebra	Concept	Functional analysis
Herman ring	Definition	Dynamical systems and ergodic theory
Finite-time thermodynamics	Concept	Classical thermodynamics, heat transfer
Struve function	Definition	Special functions
Dirac bracket	Concept	Mechanics of particles and systems
Feichtinger conjecture	Theorem	Harmonic analysis on Euclidean spaces
Advection–diffusion equation	Definition	Fluid mechanics
Pringsheim convergence	Concept	Sequences, series, summability
Cartan's classification of bounded symmetric domains	Theorem	Several complex variables and analytic spaces
Tate's thesis	Concept	Number theory
Tits alternative	Theorem	Group theory and generalizations
Wiener–Hopf equation	Concept	Integral equations
Incomplete Cholesky factorization	Concept	Numerical analysis
Spin structure	Definition	Differential geometry
Spectral space	Definition	General topology
Gravity inversion	Problem	Geophysics
Locally presentable category	Definition	Category theory; homological algebra
Jordan operator algebra	Definition	Functional analysis
Wynn's epsilon algorithm	Definition	Numerical analysis
Cohomological dimension of a field	Concept	Field theory and polynomials
Valuative criterion	Theorem	Algebraic geometry
Geopotential	Definition	Geophysics
Push–relabel maximum flow algorithm	Definition	Operations research, mathematical programming
Space hierarchy theorem	Theorem	Computer science
Process calculus	Definition	Computer science
Hilbert's syzygy theorem	Theorem	Commutative algebra
Pincherle derivative	Concept	Operator theory
Ising model	Example	Statistical mechanics, structure of matter
Reed–Frost model	Definition	Biology and other natural sciences
Kuranishi family	Concept	Several complex variables and analytic spaces
Jones calculus	Definition	Optics, electromagnetic theory
Smooth morphism	Definition	Algebraic geometry
Perron–Wiener–Brelot solution	Concept	Potential theory
Reduced scheme	Definition	Algebraic geometry
Representation theory of the Lorentz group	Example	Topological groups, Lie groups
Derivation	Definition	Commutative algebra
Artin–Wedderburn theorem	Theorem	Associative rings and algebras
Urysohn universal space	Object	General topology
Elastic pendulum	Example	Mechanics of particles and systems
Newton's method in optimization	Definition	Operations research, mathematical programming
Marcinkiewicz interpolation theorem	Theorem	Functional analysis
Filtered algebra	Concept	Associative rings and algebras
Rejection sampling	Theorem	Numerical analysis
Simplicial homology	Definition	Algebraic topology
Intersection body	Definition	Convex and discrete geometry
Hall basis	Concept	Nonassociative rings and algebras
Poincaré problem	Problem	Several complex variables and analytic spaces
Lambert W function	Definition	Special functions
Flexible algebra	Concept	Nonassociative rings and algebras