Neutral faithful representations of finite groups are fully classified in dimension ≤3, with a general neutrality criterion for abelian groups and a normalizer theory for gerbe morphisms that depends only on geometric type.
Groups 21(2016), no
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Neutral representations in dimension $\leq 3$ and fields of moduli
Neutral faithful representations of finite groups are fully classified in dimension ≤3, with a general neutrality criterion for abelian groups and a normalizer theory for gerbe morphisms that depends only on geometric type.