55
votes
6answers
2k views

How bad for TeX is omitting braces {}, even if the result is the same?

Sometimes writing braces and omitting them produces the same result: \tilde{\psi} \mathrm{e}^{\mathrm{i} \pi} vs \tilde \psi \mathrm e^{\mathrm i \pi} Or (taken from Werner's comment below) ...