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group of units

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  • Group ring — This page discusses the algebraic group ring of a discrete group; for the case of a topological group see group algebra, and for a general group see Group Hopf algebra. In algebra, a group ring is a free module and at the same time a ring,… …   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 8 (Sweden) — Group 8 (in Swedish: Grupp 8 ) was a feminist movement in Sweden, founded by eight women in Stockholm in 1968. The organization took up various issues, such as demands for expansions of kindergartens, 6 hour working day, equal pay for equal work… …   Wikipedia

  • 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 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 559 — For more details on on the PAVN logistical system through southern Laos, see Ho Chi Minh Trail. Group 559 was a transportation and logistical unit of the People s Army of Vietnam that was subordinate to the Rear Services General Directorate.… …   Wikipedia

  • Units for the Reinstatement of Order — The Units for the Reinstatement of Order (Greek: Μονάδες Αποκατάστασης Τάξης, Monades Apokatastasis Taksis), usually abbreviated as MAT, are a special division of the Hellenic Police, whose primary and most famous role is that of riot control.… …   Wikipedia

  • Cyclic group — Group theory Group theory …   Wikipedia

  • Units of Measure Directive — The Units of Measure Directive, sometimes referred to as the Metric Directive and more formally known as Council Directive 80/181/EEC of 20 December 1979 on the approximation of the laws of the Member States relating to units of measurement and… …   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 (sociology) — In sociology, a group can be defined as two or more humans that interact with one another, accept expectations and obligations as members of the group, and share a common identity. By this definition, society can be viewed as a large group,… …   Wikipedia

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