An optional argument for theorem environment to attribute the author

Asked Mar 23 '20 at 07:49

Active Mar 23 '20 at 07:49

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How to define the theorem environment to make an attribution in the formulation. To use something like that

\thm[Lagrange]{...}

and obtain

Theorem 3 (Lagrange). {...}

I searched this site but to no avail.

asked Mar 23 '20 at 07:49

J. Doe

1

Welcome to TeX SX! This is the standard behaviour, at least with packages amsthm or ntheorem. – Bernard Mar 23 '20 at 10:20
Welcome. The input should be \begin{thm}[Lagrange] if you are using amsthm. – barbara beeton Mar 23 '20 at 19:31
@barbarabeeton thanks a lot! Though it's strange to me that the type of (Lagrange) is not bold and the point at the end is. – J. Doe Mar 23 '20 at 20:22
@J.Doe -- That's AMS house style. If you want it bold, this question says how: How to make the optional title of a theorem bold with amsthm? – barbara beeton Mar 23 '20 at 20:33
2

It occurs to me that if you're using amsthm, it might be helpful for you to read the user's guide: texdoc amsthdoc. It's not very long, and explains a lot about how things work as well as gives guidance for frequently requested variations. – barbara beeton Mar 23 '20 at 20:36

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