united symmetry group

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• United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… …   Universalium

• 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

• Conway group — Group theory Group theory …   Wikipedia

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• subatomic particle — or elementary particle Any of various self contained units of matter or energy. Discovery of the electron in 1897 and of the atomic nucleus in 1911 established that the atom is actually a composite of a cloud of electrons surrounding a tiny but… …   Universalium

• Leech lattice — In mathematics, the Leech lattice is an even unimodular lattice Λ24 in 24 dimensional Euclidean space E24 found by John Leech (1967). Contents 1 History 2 Characterization 3 Properties …   Wikipedia

• Sudoku — Not to be confused with Sodoku. A Sudoku puzzle …   Wikipedia

• Pentagram — For other uses, see Pentagram (disambiguation). Regular pentagram A pentagram Type Star polygon Edges and vertices 5 Schläfli symbol {5/2} …   Wikipedia

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• quark — /kwawrk, kwahrk/, n. Physics. any of the hypothetical particles with spin 1/2, baryon number 1/3, and electric charge 1/3 or 2/3 that, together with their antiparticles, are believed to constitute all the elementary particles classed as baryons… …   Universalium