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# positive closure

English-Chinese computer dictionary (英汉计算机词汇大词典). 2013.

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• closure — closure, social closure Identified in the writings of Max Weber , and more recently resurrected by the British sociologist Frank Parkin, the concept emerged as an alternative to Marxist theories of inequality and of how the latter is generated,… …   Dictionary of sociology

• Closure (The X-Files) — Closure The X Files episode Samantha Mulder and Jeffrey Spender s handprint at April Air Force Base Episode no …   Wikipedia

• Closure (wine bottle) — Closure is a term used in the wine industry to refer to a stopper, the object used to seal a bottle and avoid harmful contact between the wine and oxygen.[1] They include: Traditional natural cork closures ( corks ); alternative wine closures,… …   Wikipedia

• Closure problem — A Closure problem is a problem in graph theory for finding a set of vertices in a directed graph such that there are no edges from the set to the rest of the graph. More specifically, the minimum closure problem asks for a set of this type with… …   Wikipedia

• Positive set theory — In mathematical logic, positive set theory is the name for a class of alternative set theories in which the axiom of comprehension* {x mid phi} exists holds for at least the positive formulas phi (the smallest class of formulas containing atomic… …   Wikipedia

• Positive definite function on a group — In operator theory, a positive definite function on a group relates the notions of positivity, in the context of Hilbert spaces, and algebraic groups. It can be viewed as a particular type of positive definite kernel where the underlying set has… …   Wikipedia

• Algebraic closure — In mathematics, particularly abstract algebra, an algebraic closure of a field K is an algebraic extension of K that is algebraically closed. It is one of many closures in mathematics.Using Zorn s lemma, it can be shown that every field has an… …   Wikipedia

• Tight closure — In mathematics, in the area of commutative algebra, tight closure is an operation defined on ideals in positive characteristic. It was introduced by Mel Hochster and Craig Huneke in the 1980s. Let R be a commutative noetherian ring containing a… …   Wikipedia

• Vacuum assisted closure wound therapy — Vacuum assisted closure (VAC) is a technique of wound closure used to promote healing in large or chronic wounds, fight infection and enhance healing of burns. VAC seals the wound with a foam dressing and applies negative pressure to the wound… …   Wikipedia

• Kleene closure — Die Kleenesche Hülle (auch endlicher Abschluss, Kleene * Abschluss oder Verkettungshülle genannt) eines Alphabets Σ oder einer formalen Sprache L ist die Menge aller Wörter, die durch beliebige Konkatenation (Verknüpfung) von Symbolen des… …   Deutsch Wikipedia

• Migraine surgery — is any surgical operation undertaken with the goal of reducing or preventing migraines. Innovative surgical techniques have been developed to help patients with migraine headaches. Migraines affect an estimated 10% of the worldwide population… …   Wikipedia