I was wondering how the format for numbering statements can be changed so that the statement number precedes the word "Theorem" or "Definition". For example, I use the following code:

\begin{Theorem} \label{thmOnSomething} 
Here is the theorem statement.

The output looks like this:

Theorem 1.2.27 Here is the theorem statement.

How can I change the code so that the output is as follows:

1.2.27. Theorem: Here is the theorem statement.

  • Do you load amsthm or any other related package. Please add a complete minimal working example. – Marco Daniel Nov 3 '13 at 8:05
  • if you're using amsthm, just insert \swapnumbers before the first \newtheorem. documented in the user's guide: texdoc amsthdoc. – barbara beeton Nov 3 '13 at 8:22

In the base LaTeX the solution may be as follows:




%   \item[\hskip \labelsep{\bfseries #1\ #2}]\itshape}
\item[\hskip \labelsep{\bfseries #2.\ #1:}]\itshape}






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Because the style of numbering depends on class, there is a full example with the class book. The main trick is in the line below the commented one.

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