About: Root datum

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In mathematical group theory, the root datum of a connected split reductive algebraic group over a field is a generalization of a root system that determines the group up to isomorphism. They were introduced by Michel Demazure in SGA III, published in 1970.

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  • In mathematical group theory, the root datum of a connected split reductive algebraic group over a field is a generalization of a root system that determines the group up to isomorphism. They were introduced by Michel Demazure in SGA III, published in 1970. (en)
  • 在數學的代數群領域中，根資料（原文為法文donnée radicielle）是一個連通、分裂、可簡約代數群的不變量。對於可簡約代數群，根資料是比根系更精細的不變量，若假設連通性，則它決定了代數群的結構（至多差一個同構）。根資料的定義首見於M. Demazure在SGA III中的闡述，於1970年出版。 (zh)
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  • In mathematical group theory, the root datum of a connected split reductive algebraic group over a field is a generalization of a root system that determines the group up to isomorphism. They were introduced by Michel Demazure in SGA III, published in 1970. (en)
  • 在數學的代數群領域中，根資料（原文為法文donnée radicielle）是一個連通、分裂、可簡約代數群的不變量。對於可簡約代數群，根資料是比根系更精細的不變量，若假設連通性，則它決定了代數群的結構（至多差一個同構）。根資料的定義首見於M. Demazure在SGA III中的闡述，於1970年出版。 (zh)
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  • Root datum (en)
  • 根資料 (zh)
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