[Tex/LaTex] Indent itemized list with custom item names

Question

How would I reproduce the typesetting in the screenshot below? In particular, I'm interested in the nicely indented list of hypotheses with the following features:

• The item names (H1, H2, H3) don't hang off into the left margin.
• The bodies of the three list items are aligned with each other and inset from the rest of the text

Answer 1

It's easy with the enumitem package:

\documentclass{article}
\usepackage[showframe]{geometry}
\usepackage{enumitem}
\usepackage{lipsum}

\begin{document}

\lipsum[1]
\begin{enumerate}[label=H\arabic*. , wide=0.5em,  leftmargin=*]
  \item \lipsum[2]
  \item \lipsum[3]
  \item \lipsum[4]
\end{enumerate}

\end{document}