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Normal graded rings. (Anneaux gradués normaux.) (French) Zbl 0686.14005

Introduction à la théorie des singularités. II: Méthodes algébriques et géométriques, Trav. Cours 37, 35-68 (1988).
This paper is a reprint of a seminar talk given in december 1978. It has been followed by work of several Japanese reseachers.
For the entire collection see [Zbl 0663.32002].
Reviewer: M.Demazure

MSC:

14C20 Divisors, linear systems, invertible sheaves
14B05 Singularities in algebraic geometry
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