Concepts

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

Ideas 6601–6750 of 7386.

Name	Kind	Subject
Ffowcs Williams–Hawkings equation	Concept	Fluid mechanics
Completion of a valued field	Concept	Field theory and polynomials
Mackey topology	Concept	Functional analysis
Inertial manifold	Concept	Dynamical systems and ergodic theory
Doubling measure	Concept	Measure and integration
Raptor code	Concept	Information and communication theory, circuits
Roche lobe	Concept	Mechanics of particles and systems
Adiabatic process	Concept	Classical thermodynamics, heat transfer
Wreath product	Concept	Group theory and generalizations
Intermittency	Concept	Dynamical systems and ergodic theory
Fine topology	Concept	Potential theory
Gelfand pair	Concept	Abstract harmonic analysis
Consistency of summability methods	Concept	Sequences, series, summability
Hilbert–Schmidt operator	Concept	Operator theory
Dandelin spheres	Concept	Geometry
Weyl equation	Concept	Quantum theory
Zero dynamics	Concept	Systems theory; control
Robin constant	Concept	Potential theory
Mathematical optimization	Concept	Operations research, mathematical programming
Elementary theory of the category of sets	Concept	Category theory; homological algebra
Coherent ring	Concept	Commutative algebra
Elliott classification program	Concept	Functional analysis
Gersten complex	Concept	K-theory
Cellular homology	Concept	Algebraic topology
Nambu–Goto action	Concept	Quantum theory
Barotropic vorticity equation	Concept	Fluid mechanics
Packing measure	Concept	Measure and integration
Lusternik–Schnirelmann category	Concept	Algebraic topology
Canonical module	Concept	Commutative algebra
Vorticity equation	Concept	Fluid mechanics
Natural duality	Concept	General algebraic systems
Cofibration	Concept	Algebraic topology
Deterministic finite automaton	Concept	Computer science
GENERIC formalism	Concept	Statistical mechanics, structure of matter
Homogeneous integral equation	Concept	Integral equations
Meromorphic function of several variables	Concept	Several complex variables and analytic spaces
Edit distance	Concept	Computer science
Caccioppoli set	Concept	Calculus of variations and optimal control; optimization
Cerf theory	Concept	Manifolds and cell complexes
Sequent calculus	Concept	Mathematical logic and foundations
Dirichlet-to-Neumann operator	Concept	Partial differential equations
Solvable Lie algebra	Concept	Nonassociative rings and algebras
Neural network approximation	Concept	Approximations and expansions
Celestial sphere	Concept	Astronomy and astrophysics
Matrix function	Concept	Linear and multilinear algebra; matrix theory
Baum–Welch algorithm	Concept	Statistics
Eichler order	Concept	Number theory
MUSCL scheme	Concept	Numerical analysis
K2 of a ring	Concept	K-theory
Limiting subdifferential	Concept	Calculus of variations and optimal control; optimization
Epsilon-NFA	Concept	Computer science
Universal algebra	Concept	General algebraic systems
Tensor rank	Concept	Linear and multilinear algebra; matrix theory
Dehn twist	Concept	Manifolds and cell complexes
Linear extension	Concept	Order, lattices, ordered algebraic structures
Tension field	Concept	Global analysis, analysis on manifolds
Nemytskii operator	Concept	Operator theory
Lambert summation	Concept	Sequences, series, summability
H-representation and V-representation	Concept	Convex and discrete geometry
Hypergeometric differential equation	Concept	Special functions
Rees algebra	Concept	Commutative algebra
Frobenius method	Concept	Ordinary differential equations
Sets of capacity zero	Concept	Potential theory
End and coend	Concept	Category theory; homological algebra
Hill equation	Concept	Biology and other natural sciences
Kelvin transform	Concept	Potential theory
Reinhardt domain	Concept	Several complex variables and analytic spaces
Classifying space of a group	Concept	Algebraic topology
Joule–Thomson effect	Concept	Classical thermodynamics, heat transfer
Laguerre polynomials	Concept	Special functions
Many-sorted algebra	Concept	General algebraic systems
Random walk on a group	Concept	Probability theory and stochastic processes
Bel–Robinson tensor	Concept	Relativity and gravitational theory
Orlicz space	Concept	Functional analysis
Angular spectrum method	Concept	Optics, electromagnetic theory
Wilf–Zeilberger pair	Concept	Special functions
Ternary operation	Concept	General algebraic systems
Non-equilibrium thermodynamics	Concept	Statistical mechanics, structure of matter
Sparse approximation	Concept	Approximations and expansions
Vector quantization	Concept	Information and communication theory, circuits
Markov decision process	Concept	Operations research, mathematical programming
Geodesy	Concept	Geophysics
Affine term structure model	Concept	Game theory, economics, finance, and other social and behavioral sciences
Extreme set	Concept	Convex and discrete geometry
Gravity assist	Concept	Mechanics of particles and systems
Jacobi amplitude	Concept	Special functions
Free-air anomaly	Concept	Geophysics
Realization of a transfer function	Concept	Systems theory; control
Noncommutative harmonic analysis	Concept	Abstract harmonic analysis
Signature	Concept	Mathematical logic and foundations
Quadratic polynomial dynamics	Concept	Dynamical systems and ergodic theory
Sigma-finite measure	Concept	Measure and integration
Generic filter	Concept	Mathematical logic and foundations
Hartley transform	Concept	Integral transforms, operational calculus
Axiom of dependent choice	Concept	Mathematical logic and foundations
Effective temperature	Concept	Astronomy and astrophysics
Lorentz transformation	Concept	Relativity and gravitational theory
Aitken's delta-squared process	Concept	Numerical analysis
Prime radical	Concept	Associative rings and algebras
Jacobson topology	Concept	Associative rings and algebras
Hilbert symbol	Concept	Number theory
Mehler–Fock transform	Concept	Integral transforms, operational calculus
Periodic tiling	Concept	Convex and discrete geometry
Infinitary operation	Concept	General algebraic systems
p-adic absolute value	Concept	Field theory and polynomials
Projective cover	Concept	Associative rings and algebras
Internal language	Concept	Mathematical logic and foundations
Lattice	Concept	Order, lattices, ordered algebraic structures
Holonomy	Concept	Differential geometry
Filtration of a module	Concept	Commutative algebra
Pi-calculus	Concept	Computer science
Hamilton–Jacobi–Isaacs equation	Concept	Calculus of variations and optimal control; optimization
Linear-feedback shift register	Concept	Information and communication theory, circuits
Direct product of algebras	Concept	General algebraic systems
Linear response function	Concept	Statistical mechanics, structure of matter
Hilbert sum	Concept	Functional analysis
Nakano positivity	Concept	Several complex variables and analytic spaces
Provability logic	Concept	Mathematical logic and foundations
Matrix congruence	Concept	Linear and multilinear algebra; matrix theory
Hopf algebra structure on cohomology	Concept	Algebraic topology
Simplicial object	Concept	Category theory; homological algebra
Smoothness classes	Concept	Real functions
Intersection form	Concept	Manifolds and cell complexes
Kappa mechanism	Concept	Astronomy and astrophysics
Lie subalgebra	Concept	Nonassociative rings and algebras
Lie algebra of a Lie group	Concept	Topological groups, Lie groups
Nonstandard analysis	Concept	Real functions
Sequential space	Concept	General topology
Luzin N property	Concept	Real functions
Weak and strong extremum	Concept	Calculus of variations and optimal control; optimization
Pseudocomplement	Concept	Order, lattices, ordered algebraic structures
Richardson extrapolation	Concept	Numerical analysis
Wirtinger derivatives	Concept	Functions of a complex variable
Morley rank	Concept	Mathematical logic and foundations
Symmetry in quantum mechanics	Concept	Quantum theory
Series in Banach spaces	Concept	Sequences, series, summability
Divisor class group	Concept	Commutative algebra
Lattice (group)	Concept	Number theory
Stopping time	Concept	Probability theory and stochastic processes
John ellipsoid	Concept	Convex and discrete geometry
Galois theory	Concept	Field theory and polynomials
Incomplete beta function	Concept	Special functions
Free lattice	Concept	Order, lattices, ordered algebraic structures
Sufficient statistic	Concept	Statistics
Essential supremum	Concept	Measure and integration
Field trace	Concept	Field theory and polynomials
Stieltjes function	Concept	Real functions
Stochastic difference equation	Concept	Difference and functional equations
Ideal class group	Concept	Number theory
Chain complex	Concept	Category theory; homological algebra