QUASI-ISOMORPHISMS AND GROUPS OF QUASI-HOMOMORPHISMS
2009 ◽
Vol 08
(05)
◽
pp. 617-627
Keyword(s):
This paper investigates to which extent a self-small mixed Abelian group G of finite torsion-free rank is determined by the groups Hom (G,C) where C is chosen from a suitable class [Formula: see text] of Abelian groups. We show that G is determined up to quasi-isomorphism if [Formula: see text] is the class of all self-small mixed groups C with r0(C) ≤ r0(G). Several related results are given, and the dual problem of orthogonal classes is investigated.
2006 ◽
Vol 05
(01)
◽
pp. 1-17
◽
Keyword(s):
2018 ◽
Vol 61
(1)
◽
pp. 295-304
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Keyword(s):
2007 ◽
Vol 143
(1)
◽
pp. 103-120
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Keyword(s):
Keyword(s):
2001 ◽
Vol 55
(2)
◽
pp. 301-320
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1980 ◽
Vol 21
(1)
◽
pp. 151-163
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Keyword(s):
2004 ◽
Vol 32
(4)
◽
pp. 1587-1601
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1970 ◽
Vol 20
(2)
◽
pp. 232-242
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