## Abstract

In recent work we called a ring R a GGCD ring if the semigroup of finitely generated faithful multiplication ideals of R is closed under intersection. In this paper we introduce the concept of generalized GCD modules. An R-module M is a GGCD module if M is multiplication and the set of finitely generated faithful multiplication submodules of M is closed under intersection. We show that a ring R is a GGCD ring if and only if some R-module M is a GGCD module. Glaz defined a p.p. ring to be a GGCD ring if the semigroup of finitely generated projective (flat) ideals of R is closed under intersection. As a generalization of a Glaz GGCD ring we say that an R-module M is a Glaz GGCD module if M is finitely generated faithful multiplication, every cyclic submodule of M is projective, and the set of finitely generated projective (flat) submodules of M is closed under intersection. Various properties and characterizations of GGCD modules and Glaz GGCD modules are considered.

Original language | English |
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Pages (from-to) | 447-466 |

Number of pages | 20 |

Journal | Beitrage zur Algebra und Geometrie |

Volume | 46 |

Issue number | 2 |

Publication status | Published - 2005 |

## Keywords

- Flat module
- Greatest common divisor
- Invertible ideal
- Least common multiple
- Multiplication module
- Projective module
- p.p. Ring

## ASJC Scopus subject areas

- Algebra and Number Theory
- Geometry and Topology