2 ms·$\pmatrix{1&0\\ 0&1}$ does not work.by The_suffocated 10y ago$\pmatrix{1&0\\ 0&1}$ does not work.mkalygin 10y agoGood catch. This works (3 slashes): $\pmatrix{1&0 \\\ 0&1}$ I'll investigate this bug.