Picard groups for some blocks with TI defect groups

Claudio Marchi

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arXiv · 2101.07749

Picard groups for some blocks with TI defect groups

Claudio Marchi

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Abstract

We calculate the Picard groups for principal blocks $B$ with TI defect groups and cyclic inertial quotient. The methods used generalize results on self stable equivalences and take advantage of the existence of equivalences given by Green correspondence in this setting. In particular, we show that $\text{Pic}(B)=\mathcal{E}(B)$, giving more evidence for a conjecture on basic auto-Morita equivalences.

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Claudio Marchi. 2021-01-19. Picard groups for some blocks with TI defect groups. https://arxiv.org/abs/2101.07749

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