How to put white space under header in theorem environment

Question

Ok, I am pretty new with latex so maybe this is a basic question. I am writing in theorem environment and I want to produce only white space under my theorem header, with the text continuing right after it, but the text goes automatically under the header. any help?

Answer 1

Assuming you use amsthm, you can define new theorem style that issues the endline after the theorem heading:

\documentclass{article}

\usepackage{amsthm}

\newtheoremstyle{plain2}
{3pt}% Space above
{3pt}% Space below
{}% Body font
{}% Indent amount
{\bfseries}% Theorem head font
{\\*[3pt]}% Punctuation after theorem head % HERE CHANGE THE SPACING
{.5em}% Space after theorem head
{}% Theorem head spec (can be left empty, meaning `normal')

\theoremstyle{plain2}

\newtheorem{theorem}{Theorem}

\begin{document}

\begin{theorem}[My theorem]
This is my theorem.
\end{theorem}

\end{document}