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In mathematics, and more specifically in the theory of C*-algebras, the noncommutative tori Aθ, also known as irrational rotation algebras for irrational values of θ, form a family of noncommutative C*-algebras which generalize the algebra of continuous functions on the 2-torus. Many topological and geometric properties of the classical 2-torus have algebraic analogues for the noncommutative tori, and as such they are fundamental examples of a noncommutative space in the sense of Alain Connes.

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  • Die irrationalen Rotationsalgebren werden im mathematischen Teilgebiet der Funktionalanalysis betrachtet. Es handelt sich um eine Klasse von C*-Algebren, die sich aus der C*-Algebra der stetigen, komplexwertigen Funktionen auf dem Einheitskreis zusammen mit einer Rotation dieses Einheitskreises um einen irrationalen Winkel ergeben. (de)
  • In mathematics, and more specifically in the theory of C*-algebras, the noncommutative tori Aθ, also known as irrational rotation algebras for irrational values of θ, form a family of noncommutative C*-algebras which generalize the algebra of continuous functions on the 2-torus. Many topological and geometric properties of the classical 2-torus have algebraic analogues for the noncommutative tori, and as such they are fundamental examples of a noncommutative space in the sense of Alain Connes. (en)
  • Le tore non commutatif associé au nombre irrationnel est la C*-algèbre universelle engendrée par deux unitaires et qui vérifient : C'est un exemple fondamental de géométrie non commutative. (fr)
  • 비가환 기하학에서 비가환 원환면(非可換圓環面, 영어: noncommutative torus)은 C* 대수의 하나다. (가환) 원환면 위에 존재하는 연속 함수들의 C* 대수를 일반화한 것이다. (ko)
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  • Die irrationalen Rotationsalgebren werden im mathematischen Teilgebiet der Funktionalanalysis betrachtet. Es handelt sich um eine Klasse von C*-Algebren, die sich aus der C*-Algebra der stetigen, komplexwertigen Funktionen auf dem Einheitskreis zusammen mit einer Rotation dieses Einheitskreises um einen irrationalen Winkel ergeben. (de)
  • In mathematics, and more specifically in the theory of C*-algebras, the noncommutative tori Aθ, also known as irrational rotation algebras for irrational values of θ, form a family of noncommutative C*-algebras which generalize the algebra of continuous functions on the 2-torus. Many topological and geometric properties of the classical 2-torus have algebraic analogues for the noncommutative tori, and as such they are fundamental examples of a noncommutative space in the sense of Alain Connes. (en)
  • Le tore non commutatif associé au nombre irrationnel est la C*-algèbre universelle engendrée par deux unitaires et qui vérifient : C'est un exemple fondamental de géométrie non commutative. (fr)
  • 비가환 기하학에서 비가환 원환면(非可換圓環面, 영어: noncommutative torus)은 C* 대수의 하나다. (가환) 원환면 위에 존재하는 연속 함수들의 C* 대수를 일반화한 것이다. (ko)
rdfs:label
  • Irrationale Rotationsalgebra (de)
  • Tore non commutatif (fr)
  • 비가환 원환면 (ko)
  • Noncommutative torus (en)
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