Concepts

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

Ideas 6151–6300 of 7386.

Name	Kind	Subject
Carleson measure	Concept	Functions of a complex variable
Hadamard product	Concept	Linear and multilinear algebra; matrix theory
Gaussian curvature	Concept	Differential geometry
Boolean circuit	Concept	Computer science
Wright–Fisher model	Concept	Biology and other natural sciences
Functional equation	Concept	Difference and functional equations
Heaviside cover-up method	Concept	Real functions
Polynomial interpolation	Concept	Approximations and expansions
Bäcklund transform	Concept	Dynamical systems and ergodic theory
Beth number	Concept	Mathematical logic and foundations
Complete set of orthogonal idempotents	Concept	Associative rings and algebras
Quadratic residue code	Concept	Information and communication theory, circuits
Magnetic dipole moment	Concept	Optics, electromagnetic theory
Hausdorff dimension	Concept	Measure and integration
Coleman–Noll procedure	Concept	Mechanics of deformable solids
Initial value problem for a recurrence	Concept	Difference and functional equations
Separation of variables in the Hamilton–Jacobi equation	Concept	Mechanics of particles and systems
Betti number	Concept	Algebraic topology
Poisson regression	Concept	Statistics
Entropy production	Concept	Statistical mechanics, structure of matter
Calabi–Yau manifold	Concept	Algebraic geometry
Surface of general type	Concept	Algebraic geometry
McKendrick–von Foerster equation	Concept	Biology and other natural sciences
Fell topology	Concept	Topological groups, Lie groups
First class constraint	Concept	Mechanics of particles and systems
Non-atomic measure	Concept	Measure and integration
Trigonometric interpolation	Concept	Harmonic analysis on Euclidean spaces
Arrow–Debreu model	Concept	Game theory, economics, finance, and other social and behavioral sciences
System F	Concept	Mathematical logic and foundations
Cyclic redundancy check	Concept	Information and communication theory, circuits
Lindelöf space	Concept	General topology
Thermal conduction	Concept	Classical thermodynamics, heat transfer
Deformation theory	Concept	Algebraic geometry
Rational point	Concept	Algebraic geometry
Crossing number	Concept	Manifolds and cell complexes
Increasing and decreasing function on an open interval	Concept	Real functions
Universal covering group	Concept	Topological groups, Lie groups
Functor of points	Concept	Algebraic geometry
Tjurina number	Concept	Several complex variables and analytic spaces
Ergosphere	Concept	Relativity and gravitational theory
Elasticity tensor	Concept	Mechanics of deformable solids
Cartan–Eilenberg resolution	Concept	Category theory; homological algebra
Determinantal ideal	Concept	Commutative algebra
Beilinson regulator	Concept	K-theory
Spherical trigonometry	Concept	Geometry
Sequential probability ratio test	Concept	Statistics
Minkowski addition	Concept	Convex and discrete geometry
Combustion theory	Concept	Classical thermodynamics, heat transfer
K1 of a ring	Concept	K-theory
Stokes drift	Concept	Fluid mechanics
Irreducible component	Concept	Algebraic geometry
Quillen adjunction	Concept	Category theory; homological algebra
Banach limit	Concept	Sequences, series, summability
Carathéodory metric	Concept	Several complex variables and analytic spaces
Matroid rank	Concept	Combinatorics
Stagnation pressure	Concept	Fluid mechanics
Second sound	Concept	Fluid mechanics
Heat capacity	Concept	Classical thermodynamics, heat transfer
Manifold with corners	Concept	Global analysis, analysis on manifolds
Press–Schechter formalism	Concept	Astronomy and astrophysics
Nonlinear optics	Concept	Optics, electromagnetic theory
Reduced ring	Concept	Commutative algebra
Admissible representation	Concept	Topological groups, Lie groups
Second quantization	Concept	Quantum theory
Time complexity	Concept	Computer science
Kinematics	Concept	Mechanics of particles and systems
Frölicher space	Concept	Global analysis, analysis on manifolds
Moving least squares	Concept	Numerical analysis
Fermi acceleration	Concept	Astronomy and astrophysics
Contact mechanics	Concept	Mechanics of deformable solids
Akivis algebra	Concept	Nonassociative rings and algebras
Subalgebra lattice	Concept	General algebraic systems
Divide and choose	Concept	Game theory, economics, finance, and other social and behavioral sciences
Action	Concept	Mechanics of particles and systems
Minakshisundaram–Pleijel zeta function	Concept	Global analysis, analysis on manifolds
Holomorphic map between Riemann surfaces	Concept	Functions of a complex variable
Incentive compatibility	Concept	Game theory, economics, finance, and other social and behavioral sciences
Borel–Moore homology	Concept	Algebraic topology
Elastodynamics	Concept	Mechanics of deformable solids
Compositum of fields	Concept	Field theory and polynomials
Spectral element method	Concept	Numerical analysis
Local truncation error	Concept	Numerical analysis
Associative quotient of a magma	Concept	Group theory and generalizations
Berkovich space	Concept	Algebraic geometry
Maximal compact subgroup	Concept	Topological groups, Lie groups
Commutator of a ring	Concept	Nonassociative rings and algebras
Triangulated category	Concept	Category theory; homological algebra
Topological vector space	Concept	Functional analysis
Isomorphism of topological groups	Concept	Topological groups, Lie groups
Dimensionless numbers in fluid mechanics	Concept	Fluid mechanics
Optimal control	Concept	Calculus of variations and optimal control; optimization
Nijenhuis tensor	Concept	Differential geometry
Special Jordan algebra	Concept	Nonassociative rings and algebras
Omega-complete partial order	Concept	Order, lattices, ordered algebraic structures
Mayer f-function	Concept	Statistical mechanics, structure of matter
Reductive Lie algebra	Concept	Nonassociative rings and algebras
Sequential equilibrium	Concept	Game theory, economics, finance, and other social and behavioral sciences
Computational fluid dynamics	Concept	Fluid mechanics
Newtonian fluid	Concept	Fluid mechanics
Hamiltonian optics	Concept	Optics, electromagnetic theory
Direct collocation	Concept	Calculus of variations and optimal control; optimization
Free distributive lattice	Concept	Order, lattices, ordered algebraic structures
Modular curve	Concept	Number theory
Rapidity	Concept	Relativity and gravitational theory
Orbital angular momentum of light	Concept	Optics, electromagnetic theory
Gorenstein ring	Concept	Commutative algebra
Hodges–Lehmann estimator	Concept	Statistics
Nelder–Mead method	Concept	Operations research, mathematical programming
Fractional calculus	Concept	Real functions
Periodic point	Concept	Dynamical systems and ergodic theory
Lattice congruence	Concept	Order, lattices, ordered algebraic structures
E-infinity operad	Concept	Algebraic topology
Hammerstein integral equation	Concept	Integral equations
Ordered geometry	Concept	Geometry
Stable theory	Concept	Mathematical logic and foundations
Electrical network	Concept	Potential theory
Fenchel conjugate	Concept	Convex and discrete geometry
Linear program in standard form	Concept	Operations research, mathematical programming
Muckenhoupt weights	Concept	Harmonic analysis on Euclidean spaces
List decoding	Concept	Information and communication theory, circuits
Cobordism	Concept	Manifolds and cell complexes
Multivariate division algorithm	Concept	Commutative algebra
Young's modulus	Concept	Mechanics of deformable solids
State function	Concept	Classical thermodynamics, heat transfer
Magnetohydrodynamics	Concept	Fluid mechanics
q-exponential	Concept	Combinatorics
Monodromy of the hypergeometric equation	Concept	Special functions
Rational difference equation	Concept	Difference and functional equations
Pointed space	Concept	Algebraic topology
EXPTIME	Concept	Computer science
Morse theory on Hilbert manifolds	Concept	Global analysis, analysis on manifolds
PSPACE	Concept	Computer science
Semidirect product of Lie algebras	Concept	Nonassociative rings and algebras
Cayley–Dickson construction	Concept	Nonassociative rings and algebras
Reaction–diffusion system	Concept	Partial differential equations
Error-correcting code	Concept	Information and communication theory, circuits
Heisenberg picture	Concept	Quantum theory
Expansive homeomorphism	Concept	Dynamical systems and ergodic theory
Bicategory	Concept	Category theory; homological algebra
Integral geometry	Concept	Convex and discrete geometry
Algebraic statistics	Concept	Statistics
Faithful module	Concept	Associative rings and algebras
Picard–Vessiot extension	Concept	Field theory and polynomials
Sheaf	Concept	General topology
Triebel–Lizorkin space	Concept	Functional analysis
Wiener index	Concept	Combinatorics
f-divergence	Concept	Information and communication theory, circuits
Poisson kernel	Concept	Potential theory
Thermodynamic state	Concept	Classical thermodynamics, heat transfer
Mikusiński operational calculus	Concept	Integral transforms, operational calculus