Vol. 63, No. 2, 1976

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Primary powers of a prime ideal

L. Robbiano and Giuseppe Valla

Vol. 63 (1976), No. 2, 491–498
Abstract

In this paper we show that the powers of a prime ideal p are primary iff the direct summands of the graded ring associated with p are torsion-free. We prove some consequences of this fact especially in connection with geometric situations.

Mathematical Subject Classification 2000
Primary: 14M10
Secondary: 13A15
Milestones
Received: 22 July 1975
Revised: 9 December 1975
Published: 1 April 1976
Authors
L. Robbiano
Giuseppe Valla