Section FrobeniusBasics.
Variable gT : finGroupType.
Implicit Types (A B : {set gT}) (G H K L R X : {group gT}).
Arguments normedTI_P {A G L}.

Lemma partition_class_support A G :
A != set0 -> trivIset (A :^: G) -> partition (A :^: G) (class_support A G).