[Tex/LaTex] Hypothesis with amsthm package

amsthm

I'm trying to write a null hypothesis with my thesis, and I found this question Hypothesis in latex. But when I tried it, it did not work for me, as I had a typesetting error and the xcolor and fancyhdr page were the culprits. (I dont even understand how that is possible, but then again I'm super new at this, so maybe that's not surprising).

Anyway, I've read that I can use the amsthm package to write the hypothesis, but I haven't been able to find a working example.

\documentclass[12pt,a4paper,oneside]{book}
\usepackage{amsmath,amssymb,amsthm}
\newtheorem{hyp}{Hypothesis}
\begin{document}
\begin{hyp}
This is my first hypothesis.
\end{hyp}
\end{document}

Best Answer

Is it what you want?

\documentclass[12pt,a4paper,oneside]{book}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{amsmath,amssymb,amsthm}
\usepackage{thmtools}
\declaretheoremstyle[
spaceabove=6pt, spacebelow=6pt,
headfont=\normalfont\bfseries,
notefont=\mdseries, notebraces={(}{)},
bodyfont=\normalfont,
postheadspace=0.6em,
headpunct=:
]{mystyle}
\declaretheorem[style=mystyle, name=Hypothesis, preheadhook={\renewcommand{\thehyp}{H\textsubscript{\arabic{hyp}}}}]{hyp}

\usepackage{cleveref}
\crefname{hyp}{hypothesis}{hypotheses}
\Crefname{hyp}{Hypothesis}{Hypotheses}

 \begin{document}
 \setcounter{hyp}{-1}
 \begin{hyp}[Test hypothesis] \label{hyp:a}This is my first hypothesis. \end{hyp}
 \begin{hyp} \label{hyp:b}This is my second hypothesis. \end{hyp}

  \Cref{hyp:a,hyp:b}.

 \end{document}

Related Solutions

[Tex/LaTex] Italicizing of amsthm package

It is set by \theoremstyle{#1}. The possible values are plain, definition and remark. E.g.

\documentclass{article}
\usepackage{amsthm}

\theoremstyle{plain}% default
\newtheorem{thm}{Theorem}[section]
\newtheorem{lem}[thm]{Lemma}
\newtheorem{prop}[thm]{Proposition}


\theoremstyle{definition}
\newtheorem{defn}{Definition}[section]
\newtheorem{exmp}{Example}[section]


\theoremstyle{remark}
\newtheorem{rem}{Remark}


\begin{document}

\section{First}

\begin{thm}
One plus one equals two.
\end{thm}

\begin{lem}
One plus one equals two.
\end{lem}

\begin{prop}
One plus one equals two.
\end{prop}


\begin{defn}
Two is one plus one.
\end{defn}

\begin{rem}
One plus one equals two.
\end{rem}


\end{document}

enter image description here

[Tex/LaTex] Alternative theorem styles with amsthm package

You can use mdframed:

\documentclass{article}
\usepackage{amsthm}
\usepackage[framemethod=tikz]{mdframed}
\usepackage{lipsum}

\theoremstyle{plain}
\newmdtheoremenv[
  linecolor=cyan,
  roundcorner=5pt,
  linewidth=1pt
]{theo}{Theorem}

\theoremstyle{definition}
\newmdtheoremenv[
  hidealllines=true,
  leftline=true,
  innerleftmargin=10pt,
  innerrightmargin=10pt,
  innertopmargin=0pt,
]{defi}{Definition}

\begin{document}

\lipsum[4]
\begin{defi}
\lipsum[4]
\end{defi}
\lipsum[4]
\begin{theo}
\lipsum[4]
\end{theo}

\end{document}

enter image description here

The package offers many additional customization options; please refer to the package documentation which also contains numerous examples.

If a same style is to be used for several structures, then it's better to define a style to be used multiple times; the package also offers a very useful \surroundwithmdframed command to apply mdframed settings to an already defined environment. In the following example I define a style, built an structure for definitions using this style, and surround the standard proof environment (from amsthm) with this style:

\documentclass{article}
\usepackage{amsthm}
\usepackage[framemethod=tikz]{mdframed}
\usepackage{lipsum}

\mdfdefinestyle{mystyle}{
  hidealllines=true,
  leftline=true,
  innerleftmargin=10pt,
  innerrightmargin=10pt,
  innertopmargin=0pt,
}
\surroundwithmdframed[style=mystyle]{proof}
\theoremstyle{definition}
\newmdtheoremenv[style=mystyle]{defi}{Definition}

\begin{document}

\lipsum[4]
\begin{defi}
\lipsum[4]
\end{defi}
\lipsum[4]
\begin{proof}
\lipsum*[4]
\end{proof}

\end{document}

enter image description here

Best Answer

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[Tex/LaTex] Italicizing of amsthm package

[Tex/LaTex] Alternative theorem styles with amsthm package

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