LaTeX utility macros for typesetting papers and theses involving the MMT Language including

• an mmttheory environment (see image below)
• macros for typesetting simply- and dependently-typed function types (arrows, Pis), functions (lambdas), and function applications in different variants all with nice spacing:
  • basics: \to (LaTeX built-in), \tpi{x}[A] B (for \Pi x\colon A.\ B), \lam{x}[A] (for \lambda x\colon A.\ )
  • variadic (with nice spacing and ldots): \flexFun, \flexPi, \flexApp (for application)
  • doubly, triply variadic (e.g. to ultimately typeset \Pi a \Pi b \Pi c ... \Pi d \Pi e \Pi f): \flexDoublePi, \flexTriplePi
  • each variant (Pis, lambdas) accepts types of the variables as optional arguments
  • each variant supports (Pis, lambdas) accepts multiple variables too (e.g. \lam{a b}[T] to typeset \lambda a\,b\colon T)
  • and more stuff
• macros for typesetting various FOL and SFOL stuff

1. Get ahold of this repository's files, e.g. via git subrepo:

   > git subrepo clone https://github.com/ComFreek/mmt-latex-helpers.git mmt-latex-helpers

2. Include the file all.tex in your LaTeX document:

   \RequirePackage{import}
   \subimport{mmt-latex-helpers/}{all}

   Here, we use the subimport command from the import package to allow all.tex to include files relatively to its containing directory. E.g. all.tex contains an \input{terms}, which would fail if we didn't use subimport above.

3. Test by writing $\lam{x}[S] t$ somewhere in your document. This should render as λx: S. t.

Assuming you performed step 1 of the installation above, the following should compile fine with any TeX distribution:

\documentclass[]{article}

\RequirePackage{import}
\subimport{mmt-latex-helpers}{all}

\begin{document}

\begin{mmttheory}{T}
	S & \type\\
	T & \type\\
	t & T\\
	c & S \to T\\
	d & S \to T\mmtdef
	    \lam{s}[S] c\ s
\end{mmttheory}

\end{document}

So far no shiny external documentation is available; you have to read the inline documentation in source, unfortunately 😀

\makecn{Unital}
\makecn{neut}

\begin{mmttheory}{\Unital}
    \mmtinclude{\SFOL}
    U      & \tp\\
    \circ  & \tm{U} \to \tm{U} \to \tm{U}\\
    e      & \tm{U}\\
    \neut  & \ded \fall{x}[\tm{U}] e \circ x \doteq x
\end{mmttheory}

Macros suffixed with c (for constant) usually expand to constant names (without any left/right space padding) as such. While \tm{T} expands to tm T with a good font chosen for tm of spacing towards T, the macro \tmc exapnds to just tm with a good font.