I'm not quite sure if this counts as a bug or a feature but I have the following problem with the ntheorem package. The theorem title is bold face, which I like, but in math formulas setting some (or all) letters to bold may change the meaning of the mathematical quantities (vectors are bold, scalars are normal etc)
So my question: how can I avoid that the mathematical formulas in the title of the theorem are changed but the rest of the title is still set in bold?
As far as I can see the problem does not occur in the (obsolete) theorem package.
amsthmpackage. (the [optional] part of the theorem header there isn't normally bold at all, which some non-ams people feel is a design flaw. but even if this is overcome by a\newtheoremstyle, the math still won't be bold.)