amsthmenvironmentstheorems
Instead of 1 Theorem. I want to write 1 Theorem in front of the first theorem and analogously in front of succeeding theorems. How can I get rid of the dot?
Here is a MWE:
\documentclass{article}
\usepackage{amsthm}
\swapnumbers
\newtheorem{theorem}{Theorem}
\begin{document}
\begin{theorem}
\end{theorem}
\end{document}
This is a more proper way to do it:
\documentclass[a4paper,12pt]{article}
\usepackage[utf8]{inputenc}
\usepackage[english]{babel}
\usepackage{amssymb,amsmath,amsthm}
\newtheorem{theorem}{Theorem}
\usepackage{mathtools} % Bonus
\DeclarePairedDelimiter\norm\lVert\rVert
\begin{document}
\section{Mathematical Methods}
\begin{theorem}[Placheral's Theorem]
\begin{equation*}
\norm{ F }^2_2 =2\pi \norm{ u }^2_2 .
\end{equation*}
\end{theorem}
\end{document}
As one might have guessed \newtheorem constructs theorem environments. Use it to define your Theorem, Lemma, etc. environments. You might want to have a look at \theoremstyle as well. Here is a handy method for defining an example env which is not italic.
\theoremstyle{definition} % amsthm only
\newtheorem{example}{Example}
As tohecz mentions, you may want to read up on this subject. Details for amsthm, can be found in amsthdoc.pdf.
The \newtheorem syntax should be covered by any standard LaTeX introduction.
amsthm uses \@addpunct{.} to put the period. You can patch the \proof using xpatch to replace dot by :
\documentclass{article}
\usepackage{amsthm}
\usepackage{xpatch}
\makeatletter
\xpatchcmd{\proof}{\@addpunct{.}}{\@addpunct{:}}{}{}
\makeatother
\begin{document}
\begin{proof}
\end{proof}
\end{document}
If you want upright : use this:
\makeatletter
\xpatchcmd{\proof}{\@addpunct{.}}{\normalfont\,\@addpunct{:}}{}{}
\makeatother
Best Answer
Now patch
@thmlike this: