Section FpRow.
Variables p n : nat.
Local Notation rVn := 'rV['F_p]_n.

(* Specifications: *)
Lemma rowg_mxK (L : {group rVn}) : rowg (rowg_mx L) = L.
Lemma mxrank_rowg (L : {group rVn}) :
prime p -> \rank (rowg_mx L) = logn p #|L|.