Hi all, I would like that every example should be closed by a symbol of my choice (say, for example, a black triangle).
I tried what is suggested in this answer: http://tex.stackexchange.com/questions/36791/including-end-mark-in-definitions-and-examples-using-amsthm The suggested code works in a plain text file but if I try it in a lyx file I get an error saying that example is already defined, since lyx already defines it (the same error doesn't show for definition since the relative environment in lyx is called "defn"). So the question is: is there a way to use the package thmtools in lyx and avoid such problems? Otherwise, how can I get my goal in lyx? Thank you
