So it seems that at the moment, this room is just used by myself, and just for keeping track of new questions in representation theory. Ahh well, could be worse I guess.
We know that every $2\times 2$ matrix of order 3 is conjugate to the matrix [ \left (\begin{array}{cc} 1 & -1 \\ 1 & 0 \end{array} \right) ]. I am interested in finding out to what extent this holds for $3\times 3$ integer invertible matrices.
In other words how many conjugacy classes of order 3...
The FQS criterion for the Virasoro algebra was discovered by Friedan, Qiu and Shenker (1), but the mathematicians found their proof insufficient, so that, FQS (2) and Langlands (3), published in the same time a complete proof.
There is an error in the paper of Langlands : (3) lemma 7b page 14...
What is the Borel subgroup of Projective linear group $PSL(2,\mathbb{C})$?
The FQS criterion for the Virasoro algebra was discovered by Friedan, Qiu and Shenker (1), but the mathematicians found their proof insufficient, so that, FQS (2) and Langlands (3), published in the same time a complete proof.
There is an error in the paper of Langlands : (3) lemma 7b page 14...
