Palindromic Resolutions of Simple Modules |
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Authors: | S R Hermes |
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Institution: | 1. Department of Mathematics , Brandeis University , Waltham , Massachusetts , USA srhermes@brandeis.edu |
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Abstract: | For a finite dimensional hereditary k-algebra H of Dynkin type, it is known that the trivial extension T(H) has the property that minimal projective resolutions of T(H)-modules are periodic. We examine conditions in which T(H)-modules have additional symmetry in their resolutions—namely, their resolutions are “palindromic.” A more general framework in which “palindromic” resolutions occur is also presented. |
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Keywords: | Hereditary algebras Projective resolutions Trivial extensions |
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