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Article Dans Une Revue Communications in Algebra Année : 2007

Finitely presented modules over semihereditary rings

Résumé

One proves that each almost local-global semihereditary ring has the stacked basis property and is almost Bezout. If M is a finitely presented module, its torsion part tM is a direct sum of cyclic modules where the family of annhilators is an ascending chain of invertible ideals. These ideals are invariants of M. Moreover, M/tM is a direct sum of 2-generated ideals whose product is an invariant of M. The idempotents and the positive integers defined by the rank of M/tM are invariants of M too.
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Dates et versions

hal-00002961 , version 1 (28-09-2004)
hal-00002961 , version 2 (03-10-2007)

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Francois Couchot. Finitely presented modules over semihereditary rings. Communications in Algebra, 2007, 35 (1), pp.2685--2692. ⟨hal-00002961v2⟩
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