On inert subgroups of a group
Derek J. S. Robinson (2006)
Rendiconti del Seminario Matematico della Università di Padova
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Derek J. S. Robinson (2006)
Rendiconti del Seminario Matematico della Università di Padova
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Jutta Hausen (1971)
Fundamenta Mathematicae
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John Lennox, Federico Menegazzo, Howard Smith, James Wiegold (1988)
Rendiconti del Seminario Matematico della Università di Padova
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K. Kaarli, L. Márki (2004)
Rendiconti del Seminario Matematico della Università di Padova
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Brendan Goldsmith, Fatemeh Karimi, Ahad Mehdizadeh Aghdam (2013)
Czechoslovak Mathematical Journal
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In this paper we investigate two new classes of torsion-free Abelian groups which arise in a natural way from the notion of a torsion-free Crawley group. A group is said to be an Erdős group if for any pair of isomorphic pure subgroups with , there is an automorphism of mapping onto ; it is said to be a weak Crawley group if for any pair of isomorphic dense maximal pure subgroups, there is an automorphism mapping onto . We show that these classes are extensive and pay...
Derek J. S. Robinson, James Wiegold (1984)
Rendiconti del Seminario Matematico della Università di Padova
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M. Król
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CONTENTS§ 1. Introduction.......................................................................................................................................... 5§ 2. Definitions and lemmas................................................................................................................... 7§ 3. Theorem on the isomorphism of subdirect sums with the same kernels............................. 15§ 4. The group of automorphisms of a torsion-free abelian group of rank two................................
Peter Vassilev Danchev (2003)
Commentationes Mathematicae Universitatis Carolinae
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A new class of abelian -groups with all high subgroups isomorphic is defined. Commutative modular and semisimple group algebras over such groups are examined. The results obtained continue our recent statements published in Comment. Math. Univ. Carolinae (2002).