Publication Date:
2015-03-13
Description:
Let $A$ be a tubular algebra and let $r$ be a positive irrational. Let ${\mathcal D}_r$ be the definable subcategory of $A$ -modules of slope $r$ . Then the width of the lattice of pp formulas for ${\mathcal D}_r$ is $\infty$ . It follows that if $A$ is countable, then there is a superdecomposable pure-injective module of slope $r$ .
Print ISSN:
0024-6115
Electronic ISSN:
1460-244X
Topics:
Mathematics
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