Английская Википедия:Chevalley–Iwahori–Nagata theorem

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In mathematics, the Chevalley–Iwahori–Nagata theorem states that if a linear algebraic group G is acting linearly on a finite-dimensional vector space V, then the map from V/G to the spectrum of the ring of invariant polynomials is an isomorphism if this ring is finitely generated and all orbits of G on V are closed Шаблон:Harvs. It is named after Claude Chevalley, Nagayoshi Iwahori, and Masayoshi Nagata.

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Шаблон:Algebraic-geometry-stub