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Paper   IPM / M / 200
School of Mathematics
  Title:   Action of certain groups on modules of generalized fractions
  Author(s):  H. Zakeri
  Status:   Published
  Journal: Bull. Iranian Math. Soc.
  No.:  2
  Vol.:  20
  Year:  1994
  Pages:   1-18
  Supported by:  IPM
  Abstract:
Let B=Kk A, where k is a field, A is a Noetherian k-algebra, and K is a Galois extension field of k. It truns out that the Galios group of K over k acts on a finite direct sum of certain modules of generalized fractions of B in a natural way. In this paper, it is proved that the fixed submodule of the action is a module of generalized fractions of A. This result provides a description, in terms of modules of generalized fractions, of indecomposable injective modules over a Gorenstein algebra over a field.

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