Examples

An instance of a concept.

Ideas 601–672 of 672.

Name	Kind	Subject
Centipede game	Example	Game theory, economics, finance, and other social and behavioral sciences
K2 of a field	Example	K-theory
Stiefel manifold	Example	Algebraic topology
Lattice gas	Example	Statistical mechanics, structure of matter
Besicovitch set of measure zero	Example	Measure and integration
Laplacian on the Sierpiński gasket	Example	Potential theory
Neo-Hookean solid	Example	Mechanics of deformable solids
Jacobi ellipsoid	Example	Astronomy and astrophysics
Lie algebra of an associative algebra	Example	Nonassociative rings and algebras
Laplace transform method for the heat equation	Example	Integral transforms, operational calculus
Space of null sequences	Example	Functional analysis
AKLT model	Example	Statistical mechanics, structure of matter
Van der Pol oscillator	Example	Ordinary differential equations
Dipole antenna radiation	Example	Optics, electromagnetic theory
Category of sets	Example	Category theory; homological algebra
Laplace transform of the Heaviside step function	Example	Integral transforms, operational calculus
Menger sponge	Example	General topology
Diffeomorphism group	Example	Global analysis, analysis on manifolds
Morlet wavelet	Example	Harmonic analysis on Euclidean spaces
Borromean rings	Example	Manifolds and cell complexes
Lorenz system	Example	Ordinary differential equations
Oppenheimer–Snyder model of collapse	Example	Relativity and gravitational theory
Stirling cycle	Example	Classical thermodynamics, heat transfer
Kerr metric	Example	Relativity and gravitational theory
Kondo model	Example	Statistical mechanics, structure of matter
Atwood machine	Example	Mechanics of particles and systems
Laplace transform of the exponential function	Example	Integral transforms, operational calculus
Wess–Zumino–Witten model	Example	Quantum theory
Padua points	Example	Approximations and expansions
A subgroup of order two in S3 is not normal	Example	Group theory and generalizations
Taylor–von Neumann–Sedov blast wave	Example	Fluid mechanics
Face lattice	Example	Convex and discrete geometry
Sturmian word	Example	Computer science
Einstein static universe	Example	Relativity and gravitational theory
Potential flow around a circular cylinder	Example	Fluid mechanics
Torus as a group	Example	Topological groups, Lie groups
Three-dimensional gravity and BTZ black hole	Example	Relativity and gravitational theory
Wess–Zumino model	Example	Quantum theory
Diffusion-limited aggregation	Example	Statistical mechanics, structure of matter
Einstein ring	Example	Relativity and gravitational theory
List of small groups	Example	Group theory and generalizations
Orders of the elements of S3	Example	Group theory and generalizations
Voter model	Example	Probability theory and stochastic processes
Hill differential equation	Example	Ordinary differential equations
Chandrasekhar's X- and Y-functions	Example	Integral equations
1 + 1 + 1 + 1 + ⋯	Example	Sequences, series, summability
Michell structures	Example	Mechanics of deformable solids
Worm-like chain	Example	Statistical mechanics, structure of matter
Lieb–Liniger model	Example	Statistical mechanics, structure of matter
Exceptional Lie group G2	Example	Topological groups, Lie groups
Bunimovich stadium	Example	Dynamical systems and ergodic theory
t–J model	Example	Statistical mechanics, structure of matter
Lieb–Liniger integral equation	Example	Statistical mechanics, structure of matter
Doob martingale	Example	Probability theory and stochastic processes
Lebesgue measure as Haar measure	Example	Abstract harmonic analysis
Hopf manifold	Example	Several complex variables and analytic spaces
Fourier series of Bernoulli polynomials	Example	Harmonic analysis on Euclidean spaces
K2 of the integers	Example	K-theory
Hermite equation	Example	Ordinary differential equations
Karp's 21 NP-complete problems	Example	Computer science
Spin factor	Example	Nonassociative rings and algebras
Haar measure on the circle	Example	Abstract harmonic analysis
Flexible polyhedron	Example	Convex and discrete geometry
Symplectic Lie algebra	Example	Nonassociative rings and algebras
Laplace transform of a periodic function	Example	Integral transforms, operational calculus
Runge's phenomenon	Example	Approximations and expansions
Hilbert transform of sinusoids	Example	Integral transforms, operational calculus
Hofstadter sequences	Example	Number theory
Conway knot	Example	Manifolds and cell complexes
Category of small categories	Example	Category theory; homological algebra
Free magma	Example	General algebraic systems
Heisenberg group	Example	Topological groups, Lie groups