Jurgen Muller

collaborators

2 papers

math.RT2025

Is the projective cover of the trivial module in characteristic $11$ for the sporadic simple Janko group $J_{4}$ a permutation module?

JÃ¼rgen MÃ¼ller

We determine the ordinary character of the projective cover of the trivial module in characteristic $11$ for the sporadic simple Janko group $J_{4}$ , and answer the question posed in…

math.RT2025

The projective cover of the trivial module in characteristic $11$ for the sporadic simple Janko group $J_{4}$ revisited

JÃ¼rgen MÃ¼ller

This is a sequel to arXiv:2509.05805 [math.RT], where we have determined the $11$ -modular projective indecomposable summands of the permutation character of $J_{4}$ on the cosets of…

Is the projective cover of the trivial module in characteristic 11 for the sporadic simple Janko group J4​ a permutation module?

The projective cover of the trivial module in characteristic 11 for the sporadic simple Janko group J4​ revisited

Is the projective cover of the trivial module in characteristic $11$ for the sporadic simple Janko group $J_{4}$ a permutation module?

The projective cover of the trivial module in characteristic $11$ for the sporadic simple Janko group $J_{4}$ revisited