(* Stabilisers, etc, are only mapped properly for fields. *)
Section FieldRepr.
Variable F : fieldType.
Section OneRepresentation.
Variable gT : finGroupType.
Variables (G : {group gT}) (n : nat) (rG : mx_representation F G n).
Arguments rG _%group_scope : extra scopes.
Local Notation E_G := (enveloping_algebra_mx rG).

Lemma repr_mx_free x : x \in G -> row_free (rG x).
Canonical rstabs_group := Group rstabs_group_set.