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REPRESENTATIONS OF FINITE POSETS OVER THE RING OF INTEGERS MODULO A PRIME POWER
Date
2016-12-01
Author
Arnold, David
Mader, Adolf
Mutzbauer, Otto
Solak, Ebru
Metadata
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This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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The classical category Rep(S, Z(p)) of representations of a finite poset S over the field Z(P) is extended to two categories, Rep(S,Z(p)(m)) and uRep(S, Z(p)(m)), of representations of S over the ring Z(p)(m). A list of values of S and m for which Rep(S,Z(p)(m)) or uRep(S,Z(p)(m)) has infinite representation type is given for the case that S is a forest. Applications include a computation of the representation type for certain classes of abelian groups, as the category of sincere representations in (uRep(S, Z(p)(m))) Rep(S, Z(p)(m)) has the same representation type as (homocyclic) (S, p(m))-groups, a class of almost completely decomposable groups of finite rank. On the other hand, numerous known lists of examples of indecomposable (S, p(m))-groups give rise to lists of indecomposable representations.
Subject Keywords
Poset
,
Representation
,
Indecomposable
,
Representation type
,
Almost completely decomposable group
URI
https://hdl.handle.net/11511/38005
Journal
JOURNAL OF COMMUTATIVE ALGEBRA
DOI
https://doi.org/10.1216/jca-2016-8-4-461
Collections
Department of Mathematics, Article
Citation Formats
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BibTeX
D. Arnold, A. Mader, O. Mutzbauer, and E. Solak, “REPRESENTATIONS OF FINITE POSETS OVER THE RING OF INTEGERS MODULO A PRIME POWER,”
JOURNAL OF COMMUTATIVE ALGEBRA
, vol. 8, no. 4, pp. 461–491, 2016, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/38005.