align section content with first line in runin section

Question

I'm currently using the following layout for my weekly exercises at my university:

\documentclass[a4paper, 12pt]{article}
\usepackage{titlesec}
\usepackage{lipsum}

% section title format and spacing
\titleformat{\subsection}[hang]{\sffamily\Large}{Exercise \arabic{section}.\arabic{subsection}}{0pt}{}[]
\titleformat{\subsubsection}[runin]{}{(\alph{subsubsection})}{0pt}{}[]
\titlespacing{\subsubsection}{0pt}{0.5em}{0.75em}

% subsubsection indentation
\let\svsubsubsection\subsubsection
\def\subsubsection{\leftskip1em\svsubsubsection}

\begin{document}
    \setcounter{section}{1}
    \subsection{}
    \subsubsection{}
        \lipsum[1-2]
    \subsubsection{}
        \[ some\ equation \]
    \subsection{}
\end{document}

How can I align all lines with the start of the first in a subsection, as shown by the following image:

And how can I make \[ \] math environments start in the first line of the subsection?

score 3 · Answer 1 · edited Jun 10 '20 at 12:32

3

You can use the aligned environment:

Code:

\documentclass[a4paper, 12pt]{article}
\usepackage{titlesec}
\usepackage{lipsum}
\usepackage{mathtools}% <-- better to load this (it also loads amsmath)
% section title format and spacing
\titleformat{\subsection}[hang]{\sffamily\Large}{Exercise \arabic{section}.\arabic{subsection}}{0pt}{}[]
\titleformat{\subsubsection}[runin]{}{(\alph{subsubsection})}{0pt}{}[]
\titlespacing{\subsubsection}{0pt}{0.5em}{0.75em}
% subsubsection indentation
\let\svsubsubsection\subsubsection
\def\subsubsection{\leftskip1em\svsubsubsection}
\begin{document}
    \setcounter{section}{1}
    \subsection{}
    \subsubsection{}
        \lipsum[1-2]
    \subsubsection{}
    $\begin{aligned}[t]
        F &= ma \
        E &= mc^2
     \end{aligned}$
    \subsection{}
\end{document}

edited Jun 10 '20 at 12:32

Community

1

answered Oct 31 '18 at 20:38

Peter Grill

223,288

Thanks, this answers my second question. I'm sorry that I've put two questions in one post, but I really didn't want to create a second question for a small problem like this. Anyways, I was told to not use $ for math mode as it's TeX style and not LaTeX. But now I see you using it with a reputation of 162k, so what's the truth about $ and ? – jkhsjdhjs Oct 31 '18 at 20:45
1

@jkhsjdhjs: The reason for keeping unrelated question separate are so that they may also help others in the future, should they encounter a similar problem. Having may unrelated questions lumped together make it difficult to find. – Peter Grill Nov 01 '18 at 06:59
1

@jkhsjdhjs: @jkhsjdhjs: As per you question regarding $...$. Yes, using $...$ is what is recommended as per Are $ and $ preferable to dollar signs for math mode?, but I got used to using $...$ and old habits are hard to break. On the other hand, using $$...$$ for display math should definitely be avoided as per Why is \[...\] preferable to $$..$$. – Peter Grill Nov 01 '18 at 07:02

score 2 · Answer 2 · answered Oct 31 '18 at 21:34

I think it would be much easier and simpler to use an enumerate environment with adhoc parameters. Here is a possible code:

\documentclass[a4paper, 12pt]{article}
\usepackage{amsmath, nccmath}
\usepackage{enumitem}
\usepackage{titlesec}
\usepackage{lipsum}

% section title format and spacing
\titleformat{\subsection}[hang]{\sffamily\Large}{Exercise \arabic{section}.\arabic{subsection}}{0pt}{}[]
\titleformat{\subsubsection}[runin]{}{(\alph{subsubsection})}{0pt}{}[]
\titlespacing{\subsubsection}{0pt}{0.5em}{0.75em}

% subsubsection indentation
\let\svsubsubsection\subsubsection
\def\subsubsection{\leftskip1em\svsubsubsection}

\begin{document}

    \setcounter{section}{1}
    \subsection{}
    \begin{enumerate}[wide = 0.6em, label=(\alph*), leftmargin=*]
      \item \lipsum[1-2]
    \item\leavevmode\vspace{-\baselineskip}\useshortskip \[ \text{some equation} \]
    \lipsum[11]
    \end{enumerate}
    \subsection{}

\end{document}

Thanks for your answer, but I'd prefer a solution without an additional environment, just \subsubsection, if that's even possible. — jkhsjdhjs, Oct 31 '18 at 22:19

align section content with first line in runin section

2 Answers2

Code: