Broué's abelian defect group conjecture for the sporadic simple Janko group J_4 revisited

Shigeo Koshitani, Jürgen Müller, Felix Noeske

We show that the 3-block of the sporadic simple Janko group J_4 with defect group C_3 x C_3, and the principal 3-block of the alternating group A_8 are Puig equivalent, answering a…