## Abelian Groups and ModulesContains the proceedings of an international conference on abelian groups and modules held recently in Colorado Springs. Presents the latest developments in abelian groups that have facilitated cross-fertilization of new techniques from diverse areas such as the representation theory of posets, model theory, set theory, and module theory. |

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### Contents

Arnold and M Dugas | 15 |

Fuchs | 43 |

P Keef | 65 |

Simson | 109 |

RESEARCH ARTICLES | 123 |

R E Bashir and L Bican | 143 |

Families of Preseparative Subgroups | 149 |

Bican | 162 |

T G Faticoni and P Schultz | 243 |

R Göbel and S Shelah | 273 |

P Hill and W Ullery | 290 |

Elias Toubassi University of Arizona Tucson | 291 |

R Jarisch O Mutzbauer and E Toubassi | 303 |

On Maximal Subgroups of the Semigroup of Nonnegative Matrices | 305 |

Mutzbauer and H Schäfer | 331 |

Nongxa K M Rangaswamy and C Vinsonhaler | 353 |

On the Group of Eventually Divisible Integer Sequences | 181 |

A Blass and J Irwin | 201 |

J Dauns | 224 |

J Trlifaj | 385 |

J West | 403 |

### Common terms and phrases

abelian groups additive Algebra apply assume B2-group balanced basic Butler groups called cardinality closed completely decomposable group condition consequence consider consisting construction contains continuous Corollary corresponding countable cyclic defined definition denote direct sum divisible domain elements endomorphism equivalent exact example exists extension fact faithful finite rank fixed function functor given group G height hence holds homomorphism ideal implies indecomposable induction infinite injective integer isomorphic Lemma limit Math matrix maximal modules natural Note obtain p-group particular poset prime Proof Proposition prove pure subgroup R-module Recall reduced regular relation relation system representation type respect restriction result right ideal ring satisfies separable sequence simply presented space strongly subgroup submodule subset Suppose Theorem theory torsion torsion-free group totally projective transitive union unique University weakly write