Text Formatting ⇒ proof ams

[QwareeqMathematics]

I read about amsthm package , and it has a proof environment.

How could I change proof word shape , from italic for example to bf ??

I don't want to define a new theorem style , I need the same style for proof environment. If some one know what the values and command that used to define the same environment with \qedsymbol ending , it will be wonderful.

[localghost]

Taking a look at the source of the amsthm package you can borrow the concerning code and modify it. Add the following lines to your preamble.

Code: Select all

\makeatletter
\renewenvironment{proof}[1][\proofname]{\par
  \pushQED{\qed}%
  \normalfont \topsep6\p@\@plus6\p@\relax
  \trivlist
  \item[\hskip\labelsep
        \bfseries
    #1\@addpunct{.}]\ignorespaces
}{%
  \popQED\endtrivlist\@endpefalse
}
\makeatother

In the original code there is the \itshape declaration which is now replaced with \bfseries [1].

[1] Help On LateX2e Font Selection


Best regards
Thorsten

[QwareeqMathematics]

That's work very nice.

Now, I need to change the (.) after the word Proof in the environment to (:) with distance (\) between the word Proof and (:).

Thank you

[gmedina]

...Now, I need to change the (.) after the word Proof in the environment to (:) with distance (\) between the word Proof and (:)...

In the code that localghost posted, replace this line

Code: Select all

#1\@addpunct{.}]\ignorespaces

with

Code: Select all

#1\ \@addpunct{:}]\ignorespaces

[QwareeqMathematics]

Nice result.

Thx