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Lucchini–Detomi's monolithicity conjecture for sigma-elementary groups
Let $G$ be a group with finite covering number … sigma(G) $is the smallest number of proper subgroups needed to cover$ G $. Call$ G $…$ sigma(G)< $sigma(G/N) … sigma$ -elementary grou…
Conjectureopencovering-groups finite-groups monolithic-groupsarXiv posted 2 days ago

Lucchini–Detomi's monolithicity conjecture for sigma-elementary groups