set density
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Density (disambiguation) — Density and dense usually refer to a measure of how much of some entity is within a fixed amount of space. Types of density include: In physics, density of mass: Density, mass per volume Area density or surface density, mass over a (two… … Wikipedia
Density matrix — Mixed state redirects here. For the psychiatric condition, see Mixed state (psychiatry). In quantum mechanics, a density matrix is a self adjoint (or Hermitian) positive semidefinite matrix (possibly infinite dimensional) of trace one, that… … Wikipedia
Density estimation — In probability and statistics, density estimation is the construction of an estimate, based on observed data, of an unobservable underlying probability density function. The unobservable density function is thought of as the density according to… … Wikipedia
Density on a manifold — In mathematics, and specifically differential geometry, a density is a spatially varying quantity on a differentiable manifold which can be integrated in an intrinsic manner. Abstractly, a density is a section of a certain trivial line bundle,… … Wikipedia
Density functional theory — Electronic structure methods Tight binding Nearly free electron model Hartree–Fock method Modern valence bond Generalized valence bond Møller–Plesset perturbation theory … Wikipedia
Density of states — Condensed matter physics Phases · Phase tr … Wikipedia
Density — (Roget s Thesaurus) < N PARAG:Density >N GRP: N 1 Sgm: N 1 density density solidity Sgm: N 1 solidness solidness &c. >Adj. Sgm: N 1 impenetrability impenetrability impermeability Sgm: N 1 incompressibility incompressibility Sgm … English dictionary for students
density — /den si tee/, n., pl. densities. 1. the state or quality of being dense; compactness; closely set or crowded condition. 2. stupidity; slow wittedness; obtuseness. 3. the number of inhabitants, dwellings, or the like, per unit area: The… … Universalium
Density matrix renormalization group — The density matrix renormalization group (DMRG) is a numerical variational technique devised to obtain the low energy physics of quantum many body systems with high accuracy. It was invented in 1992 by Steven R. White and it is nowadays the most… … Wikipedia
density — I (New American Roget s College Thesaurus) Compactness Nouns 1. density, denseness, solidity, solidness; impenetrability, impermeability; incompressibility; imporosity; cohesion (see coherence); constipation; consistency, spissitude; specific… … English dictionary for students
density — /ˈdɛnsəti / (say densuhtee) noun (plural densities) 1. the state or quality of being dense; compactness; closely set or crowded condition. 2. stupidity. 3. Physics a. the mass per unit of volume. b. the amount per unit of volume or per unit of… …
