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underlying+group

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  • Group 5 (racing) — Group 5 was an FIA classification for cars in sportscar racing. Although originally for limited production sports cars, the class was redefined in 1972 to exclude any minimum production requirement, and again in 1976 to become a liberal… …   Wikipedia

  • Group (mathematics) — This article covers basic notions. For advanced topics, see Group theory. The possible manipulations of this Rubik s Cube form a group. In mathematics, a group is an algebraic structure consisting of a set together with an operation that combines …   Wikipedia

  • Group scheme — In mathematics, a group scheme is a group object in the category of schemes. That is, it is a scheme G with the equivalent properties* there is a group law expressible as a multiplication μ and inversion map ι on G ; or * G is a functor (as in… …   Wikipedia

  • Group action — This article is about the mathematical concept. For the sociology term, see group action (sociology). Given an equilateral triangle, the counterclockwise rotation by 120° around the center of the triangle acts on the set of vertices of the… …   Wikipedia

  • Group selection — In evolutionary biology, group selection refers to the idea that alleles can become fixed or spread in a population because of the benefits they bestow on groups, regardless of the alleles effect on the fitness of individuals within that group.… …   Wikipedia

  • Group object — In category theory, a branch of mathematics, group objects are certain generalizations of groups which are built on more complicated structures than sets. A typical example of a group object is a topological group, a group whose underlying set is …   Wikipedia

  • Group A streptococcal infection — DiseaseDisorder infobox Name = Streptococcus, group A, as the cause of diseases classified to other chapters ICD10 = ICD10|B|95|0|b|95 ICD9 = The group A streptococcus bacterium ( Streptococcus pyogenes , or GAS ) is a form of Streptococcus… …   Wikipedia

  • Group C nerve fiber — Infobox Anatomy Name = PAGENAME Latin = GraySubject = GrayPage = Caption = C fiber not labeled, but substantia gelatinosa of Rolando is Rexed lamina II, labeled at upper left. Caption2 = Precursor = System = Artery = Vein = Nerve = Lymph =… …   Wikipedia

  • Space group — In mathematics and geometry, a space group is a symmetry group, usually for three dimensions, that divides space into discrete repeatable domains. In three dimensions, there are 219 unique types, or counted as 230 if chiral copies are considered… …   Wikipedia

  • Additive group — In mathematics, an additive group may be*an abelian group, when it is written using the symbol + for its binary operation *the underlying group under addition of a field, ring, vector space or other structure having addition as one of its… …   Wikipedia

  • Braid group — In mathematics, the braid group on n strands, denoted by B n , is a certain group which has an intuitive geometrical representation, and in a sense generalizes the symmetric group S n . Here, n is a natural number; if n gt; 1, then B n is an… …   Wikipedia

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