Dual of a projective cover over a group algebra
= Dual of a projective cover over a group algebra
For every simple finite-dimensional $kG$-module $S$,
$$
P_S^*\cong P_{S^*}.
$$
= Dual of a projective cover over a group algebra
For every simple finite-dimensional $kG$-module $S$,
$$
P_S^*\cong P_{S^*}.
$$