ListInverseDerivations( X )
This function applies InverseDerivations to all the derivations. A
field .inverses is added to D.
gap> inv := ListInverseDerivations( XSC );
[ [ 1 ], [ 3 ], [ 2 ], [ 4 ], [ 5 ], [ 6 ],
[ 7, 8, 9 ], [ 7, 8, 9 ], [ 7, 8, 9 ] ]
GAP 3.4.4