null manifold
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null-space — /nul spays /, n. Math. the set of elements of a vector space that a given linear transformation maps to zero. Also called null manifold /nul man euh fohld /. [1880 85] * * * … Universalium
null-space — ˈ ̷ ̷ ˌ ̷ ̷ noun : a subspace of a vector space consisting of vectors that under a given linear transformation are mapped to zero * * * /nul spays /, n. Math. the set of elements of a vector space that a given linear transformation maps to zero.… … Useful english dictionary
Null — may refer to: Contents 1 In computing 2 In art 3 In mathematics 4 In science 5 People … Wikipedia
Manifold Records — is a US based record label and mailorder store specializing in experimental, ambient and other hard to define audio materials. Begun in 1993 by writer and zine publisher Vince Harrigan, the label has released works by Gravitar, Final (Justin… … Wikipedia
Null set — In mathematics, a null set is a set that is negligible in some sense. For different applications, the meaning of negligible varies. In measure theory, any set of measure 0 is called a null set (or simply a measure zero set). More generally,… … Wikipedia
Null dust solution — In mathematical physics, a null dust solution (sometimes called a null fluid) is a Lorentzian manifold in which the Einstein tensor is null. Such a spacetime can be interpreted as an exact solution of Einstein s field equation, in which the only… … Wikipedia
Whitehead manifold — In mathematics, the Whitehead manifold is an open 3 manifold that is contractible, but not homeomorphic to R3. Henry Whitehead discovered this puzzling object while he was trying to prove the Poincaré conjecture.A contractible manifold is one… … Wikipedia
Pseudo-Riemannian manifold — In differential geometry, a pseudo Riemannian manifold (also called a semi Riemannian manifold) is a generalization of a Riemannian manifold. It is one of many things named after Bernhard Riemann. The key difference between the two is that on a… … Wikipedia
Causal structure — This article is about the possible causal relationships among points in a Lorentzian manifold. For classification of Lorentzian manifolds according to the types of causal structures they admit, see Causality conditions. In mathematical physics,… … Wikipedia
Conformal geometry — In mathematics, conformal geometry is the study of the set of angle preserving (conformal) transformations on a space. In two real dimensions, conformal geometry is precisely the geometry of Riemann surfaces. In more than two dimensions,… … Wikipedia
Cobordism — A cobordism (W;M,N). In mathematics, cobordism is a fundamental equivalence relation on the class of compact manifolds of the same dimension, set up using the concept of the boundary of a manifold. Two manifolds are cobordant if their disjoint… … Wikipedia
