Keywords: FreeObject-01.png math en LaTex source \begin tikzpicture \matrix a matrix of math nodes row sep 3em column sep 2 5em text height 1 5ex text depth 0 25ex B F\\ O\\ ; \path-> a-1-1 edge nodeabove i a-1-2 ; \path-> a-1-1 edge nodeleft f\; a-2-2 ; \path-> a-1-2 edge noderight \tilde f a-2-2 ; \end tikzpicture own Vincent Semeria 2010-02-01 Commutative triangles |