I want to be able to label the vertices of a graph arbitrarily, i.e., not just by letters or numbers, but by whole formulas. For example, I can't be bothered to rename the vertices in the text, so I want to label each vertex thusly: ab = A
(see code). All I get are error messages. Are there any ways to use arbitrary labels on vertices, using the TikZ package?
For example, this doesn't work:
\node (1) [label=above: $ab = A$] at (-2,0) {};
Best Answer
Put braces around the label text.