Electronic Resource
Springer
Algebra colloquium
7 (2000), S. 113-120
ISSN:
0219-1733
Keywords:
S-acts
;
projective acts
;
exact sequences
;
exact functors
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mathematics
Notes:
Abstract Let S be a semigroup. In this paper, projective S-acts and exact sequences in S-Act are studied. It is shown that, for a unitary S-act P, the functor Hom(P, –) is exact if and only if P ≅ Se for some idempotent e ɛ S.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s10011-000-0113-2
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