Concepts
A mathematical idea. It can have more than one definition.
- Concepts 7386
- Definitions 7188
- Statements 3950
- Conjectures 117
- Problems 256
- Examples 672
- Counterexamples 88
- Objects 168
- Proofs 11
- Computations 1
- Topics 1
Ideas 6301–6450 of 7386.
| Name | Kind | Subject |
|---|---|---|
| Ehresmann connection | Concept | Differential geometry |
| Backward differentiation formula | Concept | Numerical analysis |
| Microcanonical ensemble | Concept | Statistical mechanics, structure of matter |
| Hartle–Hawking state | Concept | Relativity and gravitational theory |
| Direct and inverse theorems of approximation | Concept | Approximations and expansions |
| Polynomial hierarchy | Concept | Computer science |
| Functional completeness | Concept | General algebraic systems |
| Direct method in the calculus of variations | Concept | Calculus of variations and optimal control; optimization |
| Hopf invariant | Concept | Algebraic topology |
| Descriptive set theory | Concept | Mathematical logic and foundations |
| Exact category | Concept | Category theory; homological algebra |
| Lie sphere geometry | Concept | Geometry |
| Geometric realization | Concept | Algebraic topology |
| Cyclic coordinate | Concept | Mechanics of particles and systems |
| Register machine | Concept | Computer science |
| Residually small variety | Concept | General algebraic systems |
| Integro-partial differential equation | Concept | Integral equations |
| Resistance form | Concept | Potential theory |
| Hartogs domain | Concept | Several complex variables and analytic spaces |
| Nusselt number | Concept | Classical thermodynamics, heat transfer |
| Free category | Concept | Category theory; homological algebra |
| Differential game | Concept | Game theory, economics, finance, and other social and behavioral sciences |
| Group scheme | Concept | Algebraic geometry |
| Normal form | Concept | Ordinary differential equations |
| Finitely presented group | Concept | Group theory and generalizations |
| Ore condition | Concept | Associative rings and algebras |
| Catastrophic cancellation | Concept | Numerical analysis |
| Ellipsoid method | Concept | Operations research, mathematical programming |
| Holomorphic vector bundle | Concept | Several complex variables and analytic spaces |
| Cluster algebra | Concept | Commutative algebra |
| Calculus of constructions | Concept | Mathematical logic and foundations |
| Nonharmonic Fourier series | Concept | Harmonic analysis on Euclidean spaces |
| Elastic net | Concept | Statistics |
| Data assimilation | Concept | Geophysics |
| Function of exponential order | Concept | Integral transforms, operational calculus |
| Proper holomorphic map | Concept | Several complex variables and analytic spaces |
| Free product | Concept | Group theory and generalizations |
| Boundary value problem | Concept | Ordinary differential equations |
| Identity of an algebra | Concept | Nonassociative rings and algebras |
| Degree of a continuous map | Concept | Algebraic topology |
| Gegenbauer transform | Concept | Integral transforms, operational calculus |
| Primary ideal | Concept | Commutative algebra |
| Laplacian matrix | Concept | Combinatorics |
| Computably enumerable set | Concept | Mathematical logic and foundations |
| Critical number | Concept | Real functions |
| Formal group law in topology | Concept | Algebraic topology |
| Wheeler–DeWitt equation | Concept | Relativity and gravitational theory |
| Newton's method in optimization | Concept | Operations research, mathematical programming |
| Random graph | Concept | Combinatorics |
| RP | Concept | Computer science |
| Parabolic subalgebra | Concept | Nonassociative rings and algebras |
| Hyers–Ulam stability | Concept | Difference and functional equations |
| String-searching algorithm | Concept | Computer science |
| State observer | Concept | Systems theory; control |
| Lemniscate elliptic functions | Concept | Special functions |
| Tollmien–Schlichting wave | Concept | Fluid mechanics |
| Local regression | Concept | Statistics |
| Coherent state | Concept | Quantum theory |
| Merton model of credit risk | Concept | Game theory, economics, finance, and other social and behavioral sciences |
| Tree automaton | Concept | Computer science |
| Cutoff frequency | Concept | Optics, electromagnetic theory |
| Root-finding algorithm | Concept | Numerical analysis |
| Closure of an operator | Concept | Operator theory |
| Jacobi polynomials | Concept | Special functions |
| Ill-posedness of real Laplace inversion | Concept | Integral transforms, operational calculus |
| Karnaugh map | Concept | Information and communication theory, circuits |
| Limit analysis | Concept | Mechanics of deformable solids |
| Topological ring | Concept | Associative rings and algebras |
| Pick matrix | Concept | Functions of a complex variable |
| Discrete Fourier transform | Concept | Numerical analysis |
| Partial correlation | Concept | Statistics |
| Color Lie algebra | Concept | Nonassociative rings and algebras |
| Stokes phenomenon | Concept | Ordinary differential equations |
| Rate equation | Concept | Classical thermodynamics, heat transfer |
| Spectral density estimation | Concept | Statistics |
| Absolutely free algebra | Concept | General algebraic systems |
| Atom | Concept | Order, lattices, ordered algebraic structures |
| Newman–Penrose formalism | Concept | Relativity and gravitational theory |
| NK groups | Concept | K-theory |
| Locally finite poset | Concept | Order, lattices, ordered algebraic structures |
| Parallel transport | Concept | Differential geometry |
| Near and far field | Concept | Optics, electromagnetic theory |
| Serial ring | Concept | Associative rings and algebras |
| Jukes–Cantor model | Concept | Biology and other natural sciences |
| Atkinson index | Concept | Game theory, economics, finance, and other social and behavioral sciences |
| Optical depth | Concept | Astronomy and astrophysics |
| Finite type invariant | Concept | Manifolds and cell complexes |
| Continuous-time Markov chain | Concept | Probability theory and stochastic processes |
| Killing form | Concept | Nonassociative rings and algebras |
| Rindler coordinates | Concept | Relativity and gravitational theory |
| Beurling–Ahlfors transform | Concept | Harmonic analysis on Euclidean spaces |
| K-function | Concept | Special functions |
| Gauge fixing | Concept | Optics, electromagnetic theory |
| Synchrotron radiation | Concept | Astronomy and astrophysics |
| Boussinesq approximation for buoyancy | Concept | Fluid mechanics |
| Berlekamp–Massey algorithm | Concept | Information and communication theory, circuits |
| Summation in topological groups | Concept | Sequences, series, summability |
| Prony series | Concept | Mechanics of deformable solids |
| Representation of a quiver | Concept | Associative rings and algebras |
| Banach analytic space | Concept | Several complex variables and analytic spaces |
| Relay channel | Concept | Information and communication theory, circuits |
| Neville theta functions | Concept | Special functions |
| GNSS positioning | Concept | Geophysics |
| Complementary error function | Concept | Special functions |
| Representation of a Lie algebra | Concept | Nonassociative rings and algebras |
| Adjoint functors | Concept | Category theory; homological algebra |
| Temperley–Lieb algebra | Concept | Associative rings and algebras |
| Disjoint union of posets | Concept | Order, lattices, ordered algebraic structures |
| Fourier monomial on the circle | Concept | Harmonic analysis on Euclidean spaces |
| Unital | Concept | Geometry |
| Triangulation of a point set | Concept | Convex and discrete geometry |
| Borda count | Concept | Game theory, economics, finance, and other social and behavioral sciences |
| Polynomial-time reduction | Concept | Computer science |
| Reptation | Concept | Statistical mechanics, structure of matter |
| Internal set theory | Concept | Mathematical logic and foundations |
| Valuation on convex bodies | Concept | Convex and discrete geometry |
| Motivic cohomology | Concept | K-theory |
| Locally testable code | Concept | Information and communication theory, circuits |
| Density matrix | Concept | Quantum theory |
| Completion of a topological group | Concept | Topological groups, Lie groups |
| Voronoi cell | Concept | Convex and discrete geometry |
| Cointegration | Concept | Statistics |
| G-delta set | Concept | General topology |
| Projection method | Concept | Fluid mechanics |
| Linear complexity of a sequence | Concept | Information and communication theory, circuits |
| Bessel potential | Concept | Potential theory |
| Tight frame | Concept | Harmonic analysis on Euclidean spaces |
| Epsilon-net of a set system | Concept | Convex and discrete geometry |
| Quantum electrodynamics | Concept | Quantum theory |
| Heap | Concept | Group theory and generalizations |
| Full subcategory | Concept | Category theory; homological algebra |
| Causal inference | Concept | Statistics |
| Nichols plot | Concept | Systems theory; control |
| Cubic spline | Concept | Approximations and expansions |
| Initial mass function | Concept | Astronomy and astrophysics |
| Reynolds decomposition | Concept | Fluid mechanics |
| Galaxy rotation curve | Concept | Astronomy and astrophysics |
| Discrete dipole approximation | Concept | Optics, electromagnetic theory |
| Quantum vortex | Concept | Fluid mechanics |
| Dynkin system | Concept | Measure and integration |
| Rigidity of frameworks | Concept | Convex and discrete geometry |
| Geodynamics | Concept | Geophysics |
| Binary search | Concept | Computer science |
| Classical field theory | Concept | Mechanics of particles and systems |
| Convergence of Fourier series | Concept | Harmonic analysis on Euclidean spaces |
| p-adic integer | Concept | Field theory and polynomials |
| Radical extension | Concept | Field theory and polynomials |
| Residuated mapping | Concept | Order, lattices, ordered algebraic structures |
| Parabolic cylinder function | Concept | Special functions |
| Chomsky hierarchy | Concept | Computer science |