which submodule of FG-module of a lie algebra $L$ will be determined i WANT TO I want to check that how we can find out a classical lie algebra like D_4$D_4$ and E_6 ARE$E_6$ are irreducible?
$F$o$r$m$a$t$t$i$n$g and STOP SHOUTING and splleing.
Post Closed as "Needs details or clarity" by Stefan Kohl♦, Qiaochu Yuan, Andrey Rekalo, Chris Godsil, David White