tangent ball
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Tangent measure — In measure theory, tangent measures are used to study the local behavior of Radon measures, in much the same way as tangent spaces are used to study the local behavior of differentiable manifolds. Tangent measures are a useful tool in geometric… … Wikipedia
Tangent bundle — In mathematics, the tangent bundle of a smooth (or differentiable) manifold M , denoted by T ( M ) or just TM , is the disjoint unionThe disjoint union assures that for any two points x 1 and x 2 of manifold M the tangent spaces T 1 and T 2 have… … Wikipedia
Hairy ball theorem — The hairy ball theorem of algebraic topology states that there is no nonvanishing continuous tangent vector field on the sphere. If f is a continuous function that assigns a vector in R3 to every point p on a sphere such that f ( p ) is always… … Wikipedia
hairy ball theorem — noun a) Given a sphere covered in fur, one cannot brush all the hairs flat without creating at least two whirls b) There is no nonvanishing continuous tangent vector field on the sphere … Wiktionary
Cue sports techniques — Illustration from Michael Phelan s 1859 book, The Game of Billiards Cue sports techniques (usually more specific, e.g., billiards techniques, snooker techniques) are an immensely important aspect of game play in the various cue sports such as… … Wikipedia
List of QI episodes (B series) — infobox tvseason season name = QI Series B caption = The front cover of the QI series B DVD, featuring Stephen Fry (left) and Alan Davies (right). dvd release date = 17 March, 2008 country = UK network = BBC first aired = 8 October, 2004 last… … Wikipedia
Centripetal force — Not to be confused with Centrifugal force. Classical mechanics Newton s Second Law … Wikipedia
Manifold — For other uses, see Manifold (disambiguation). The sphere (surface of a ball) is a two dimensional manifold since it can be represented by a collection of two dimensional maps. In mathematics (specifically in differential geometry and topology),… … Wikipedia
List of QI episodes (E series) — infobox tvseason season name = QI Series E caption = dvd release date = country = UK network = BBC first aired = 21 September 2007 last aired = 14 December 2007 num episodes = 13 prev series = Series D next series = Series F|This is a list of… … Wikipedia
mathematics — /math euh mat iks/, n. 1. (used with a sing. v.) the systematic treatment of magnitude, relationships between figures and forms, and relations between quantities expressed symbolically. 2. (used with a sing. or pl. v.) mathematical procedures,… … Universalium
Glossary of cue sports terms — The following is a glossary of traditional English language terms used in the three overarching cue sports disciplines: carom (or carambole) billiards referring to the various carom games played on a billiard table without pockets; pool (pocket… … Wikipedia
