This is a follow-up question of QED symbol after statements without proof, and I am really not sure whether this is the right approach to solve the problem raised there. But it seems to solve all situations I encounter perfectly, so I will try...
The theorem environment has the usual version with numbering and a *'ed version without numbering. I would now like to have another **'ed (or something similar) version that puts something around the theorem environment.
Here is what I currently need to do:
\documentclass{amsart}\newtheorem{theorem}{Theorem}[section]\newtheorem{corollary}[theorem]{Corollary}\begin{document}\begin{proof}[\unskip\nopunct]\begin{theorem} $e^{2\pi i} = 1$. \qedhere\end{theorem}\end{proof}\begin{proof}[\unskip\nopunct]\begin{corollary}[{myref}] The expression $e^{2\pi i} - 1$ equals $0$. Moreover, there is more text to actually add here. \qedhere\end{corollary}\end{proof}\end{document}and I want to avoid adding the \begin{proof}[\unskip\nopunct] and the \end{proof} myself, but get this automatically using a double star in both situations.
It might actually be better to interchange the order of the proof and the theorem environment, so a solution that provides that version would also be appreciated!
That is
\begin{myXYZ**}[...] ...\end{myXYZ**}(with myXYZ defined as a theorem environment in the header) should simply translate into
\begin{proof}[\unskip\nopunct]\begin{myXYZ}[...] ...\end{myXYZ}\end{proof}Is this (or the ** replaced with something else, independent of using theorem or lemma or proposition) possible?