GRing.ComRing_hasMulInverseval coq_unit :
'a1 Coq_isNmodule.axioms_ ->
'a1 Choice.Coq_hasChoice.axioms_ ->
'a1 Eqtype.Coq_hasDecEq.axioms_ ->
'a1 Nmodule_isZmodule.axioms_ ->
'a1 Nmodule_isSemiRing.axioms_ ->
'a1 SemiRing_hasCommutativeMul.axioms_ ->
'a1 axioms_ ->
'a1 Ssrbool.pred_sortval inv :
'a1 Coq_isNmodule.axioms_ ->
'a1 Choice.Coq_hasChoice.axioms_ ->
'a1 Eqtype.Coq_hasDecEq.axioms_ ->
'a1 Nmodule_isZmodule.axioms_ ->
'a1 Nmodule_isSemiRing.axioms_ ->
'a1 SemiRing_hasCommutativeMul.axioms_ ->
'a1 axioms_ ->
'a1 ->
'a1type ('r, 'vlocal, 'rlocal) phant_axioms = 'r axioms_