[Tex/LaTex] \normalfont in new theorem-like environment


How can I get universal in my new environment normalfont instead of italic (default)?
I thought it was something simple like

\newtheorem{exercise}{ \normalfont}[chapter] `

but doesn't work. I could not find something similar but I think it is something simple, even for me as a new user to LaTeX.

Best Answer

I prefer the key--value syntax of the thmtools package (which may use amsthm or ntheorem as backend).





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