proposition: Lemma sesquiE : (M \is (eps,theta).-sesqui) = (M == (-1) ^+ eps *: M ^t theta).
proof: Proof. by rewrite qualifE. Qed.
imports: HB(structures) mathcomp(all_ssreflect ssralg fingroup zmodp poly ssrnum) mathcomp(matrix mxalgebra vector falgebra ssrnum algC algnum) mathcomp(fieldext) mathcomp(vector)