Conjectural classification of purely nonprincipal Morita classes with defect group
Conjectural classification of purely nonprincipal Morita classes with defect group
Let and consider purely nonprincipal blocks with defect group . For each group in the following list, there is one relevant Morita equivalence class of nonprincipal blocks: , , , , , , , , , , the two classes labelled and for , , , and . Purely nonprincipal classification conjecture. The purely nonprincipal Morita equivalence classes of blocks with defect group are exactly these classes, and every block of a finite group with defect group is Morita equivalent either to one listed above or to a block in the list of Theorem 1.1. The source proposes this as a conjectural complete classification; it remains open.
Sources & referencesView supporting material
Primary source
Cesare Giulio Ardito, “Morita equivalence classes of principal blocks with elementary abelian defect groups of order 64”, arXiv:2010.07629 (2020).
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