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noncommutative geometry


noncommutative geometry

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Wiktionary英語版

出典:Wiktionary

noncommutative geometry

名詞

noncommutative geometry (countable かつ uncountable, 複数形 noncommutative geometries)

  1. (mathematics, physics) A version of C*-algebra which does away with commutativity, and the geometry which would be generated by/associated with such a modified algebra.

参照

ウィキペディア英語版

出典:Wikipedia

Noncommutative geometry

出典:『Wikipedia』 (2011/04/21 11:04 UTC 版)

英語による解説

ウィキペディア英語版からの引用
引用

Noncommutative geometry (NCG) is a branch of mathematics concerned with geometric approach to noncommutative algebras, and with construction of spaces which are locally presented by noncommutative algebras of functions (possibly in some generalized sense). A noncommutative algebra is here an associative algebra in which the multiplication is not commutative, that is, for which xy does not always equal yx; or more generally an algebraic structure in which one of the principal binary operations is not commutative; one also allows additional structures, e.g. topology or norm to be possibly carried by the noncommutative algebra of functions. The leading direction in noncommutative geometry has been laid by French mathematician Alain Connes since his involvement from about 1979.

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