P: where do you wind up when you multiply square-land by square+land?
S: where you started?
P: becaaaause . . . ? . . . .
S: (square-land)(square+land) = (square-squared) - (land-squared) = square-land
This implies that square + land is an identity element of an abelian group containing square - land and, therefore, that there exists an inverse to square - land
The question Should chat have TeX support was first asked
3½ years ago, and it has been asked at intervals since then. I am not asking that question. I know that chat should have TeX support and so does everyone else. My questions are, why hasn't this been done and when will it be done? The...