sporadic group

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• Sporadic group — In the mathematical field of group theory, a sporadic group is one of the 26 exceptional groups in the classification of finite simple groups. A simple group is a group G that does not have any normal subgroups except for the subgroup consisting… …   Wikipedia

• Group of Lie type — In mathematics, a group of Lie type G(k) is a (not necessarily finite) group of rational points of a reductive linear algebraic group G with values in the field k. Finite groups of Lie type form the bulk of nonabelian finite simple groups.… …   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 I catalytic intron — Group I catalytic introns are large self splicing ribozymes. They catalyze their own excision from mRNA, tRNA and rRNA precursors in a wide range of organisms. The core secondary structure consists of nine paired regions (P1 P9). These fold to… …   Wikipedia

• Sporadic — Occurring upon occasion or in a scattered, isolated or seemingly random way. A disorder that is sporadic is by definition neither an endemic, an epidemic, nor a pandemic: {{}}An endemic is present in a community at all times but in low frequency …   Medical dictionary

• group marriage — (among primitive peoples) a form of marriage in which a group of males is united with a group of females to form a single conjugal unit. Also called communal marriage. [1895 1900] * * *       the marriage of several men with several women. As an… …   Universalium

• McLaughlin group (mathematics) — For the television program, see The McLaughlin Group. In the mathematical discipline known as group theory, the McLaughlin group McL is a sporadic simple group of order 27 · 36 · 53· 7 · 11 = 898,128,000, discovered by McLaughlin (1969) as an… …   Wikipedia

• Higman–Sims group — In the mathematical field of group theory, the Higman–Sims group HS (named after Donald G. Higman and Charles C. Sims) is a finite group of order : 29 · 32 · 53 · 7 · 11: = 44352000.: ≈ 4 · 107.It is a simple group , meaning it does not have any… …   Wikipedia

• Fischer group — In mathematics, the term Fischer groups usually refers to the three finite groups denoted Fi 22, Fi 23, and Fi 24, all of which are simple groups. They constitute three of the 26 sporadic groups. Sometimes the term encompasses their automorphism… …   Wikipedia

• Dempwolff group — In mathematical finite group theory, the Dempwolff group is a finite group of order 319979520 = 215·32·5·7·31, that is the unique nonsplit extension 25·GL5(F2) of GL5(F2) by its natural module of order 25. The uniqueness of such a… …   Wikipedia

• Rudvalis group — In the mathematical field of group theory, the Rudvalis group Ru (found by .PropertiesThe Rudvalis group act as a rank 3 permutation group on 4060 points, with one point stabilizer the Ree group 2 F 4(2), the automorphism group of the Tits group …   Wikipedia