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arxiv: 0809.5122 · v2 · pith:EZDGX2ZInew · submitted 2008-09-30 · 🧮 math.RT

Galois coverings of weakly shod algebras

classification 🧮 math.RT
keywords coveringsgaloisshodweaklyalgebraalgebrascanonicalcohomology
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We investigate the Galois coverings of weakly shod algebras. For a weakly shod algebra not quasi-tilted of canonical type, we establish a correspondence between its Galois coverings and the Galois coverings of its connecting component. As a consequence, we show that a weakly shod algebra is simply connected if and only if its first Hochschild cohomology group vanishes.

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