set tabular/align width within landscape multicols

Question

\documentclass[10pt,landscape,a4paper]{article}

\usepackage[utf8]{inputenc}
\usepackage[ngerman]{babel}
\usepackage[utopia,sfscaled]{mathdesign}
\usepackage{amsmath}
\usepackage{upgreek}
\usepackage{bm}
\usepackage{multicol}
\setlength{\columnseprule}{0.5pt}
\usepackage[top=0mm,bottom=1mm,left=1mm,right=1mm]{geometry}
\usepackage{lipsum}
\usepackage[framemethod=tikz]{mdframed}
\usepackage{microtype}

\let\bar\overline

\definecolor{myblue}{cmyk}{1,.72,0,.38}

\everymath\expandafter{\the\everymath \color{myblue}}
\everydisplay\expandafter{\the\everydisplay \color{myblue}}

\newcommand{\header}{
\begin{mdframed}[style=header]
\footnotesize
Math cheat sheet \\
Page~\thepage~of~3
\end{mdframed}
}

\makeatletter
\renewcommand{\section}{\@startsection{section}{1}{0mm}%
                            {.2ex}%
                            {.2ex}%x
                            {\sffamily\bfseries}}

\begin{document}
\small
\begin{multicols*}{4}
\header
\columnbreak
\subsection*{Ableitungen}
\begin{align*}
f(x)&=u(x)+v(x)&\rightarrow f^\prime(x)&=u^\prime(x)+v^\prime(x) \\
f(x)&=\lambda*u(x)&\rightarrow  f^\prime(x)&=\lambda*u^\prime(x) \\
f(x)&=u(x)*v(x)&\rightarrow f^\prime(x)&=u^\prime(x)*v(x)+u(x)*v^\prime(x) \\
f(x)&=u(v(x))&\rightarrow f^\prime(x)&=u^\prime(v(x))*v^\prime(x) \\
f(x)&=\frac{u(x)}{v(x)}&\rightarrow f^\prime(x)&=\frac{u^\prime(x)*v(x)+u(x)*v^\prime(x)}{[v(x)^2]}
\end{align*}
\end{multicols*}
\end{document}

1.Why does the tabular width go over the columnwidth of the whole page and how can I set it?

2.And also Texing it gives me this:

    ./cheatsheet.tex:107: Improper \halign inside $$'s.
    <recently read> \halign 

     l.107  \end{align*}

can someone pls help :) Thank you

Welcome to TeX.SX! Which tabular do you mean? Your code doesn't include one. Note that tabular is a specific environment. Can you please edit your question (including its title), to be comprehensible? — Skillmon, Jun 01 '18 at 23:20
You have an error in the last line by the way. The derivative should be \frac{u' v - u v' }{ v^2 } — Skillmon, Jun 01 '18 at 23:28
You have several options: Changing the font size could be one. In this case however just leaving out all the \rightarrow instructions results in fitting contents and remains easily legible. — Skillmon, Jun 01 '18 at 23:30
Sorry, I have no clue. An empty align* environment results in the same error. — Skillmon, Jun 01 '18 at 23:32
You can change the align* environment to \begin{equation*}\begin{aligned}...\end{aligned}\end{equation*}. It results in slightly different vertical spacing and you don't get an error. — Skillmon, Jun 01 '18 at 23:34
I tried changing to tabular enviroment but it still didnt quiet fit in haha but using your code worked ! Thank you! — Laura, Jun 01 '18 at 23:44
Btw. you could do something like this: \frac{\mathrm{d}}{\mathrm{d}x}\left( \frac{u}{v} \right) &= \frac{u'v - uv'}{v^2} with every line. That is way smaller and contains every bit of important information. Did you read my second comment (I just want to make sure you don't get bad grades because you used a wrong quotient rule)? — Skillmon, Jun 01 '18 at 23:49
Yes I did Thank you so much!:) I'm trying to make this 'cheat sheet' for our math course in uni. I volunteered but now I'm stuggling quite a bit haha — Laura, Jun 05 '18 at 20:51

score 2 · Answer 1 · answered Jun 01 '18 at 23:39

2

The error is due to

\everydisplay\expandafter{\the\everydisplay \color{myblue}}

which is not a supported construct.

The \halign primitive that underlies all LaTeX alignments has a special display-math behaviour if used as the first item in a $$ display math, \align depends on that behaviour, but if you insert a colour special at the start of the math list, it is inserted before the \halign primitive even though the align expands to

 $$\halign....

answered Jun 01 '18 at 23:39

David Carlisle

757,742

Any possibility to set every display in myblue but still use align? – Skillmon Jun 01 '18 at 23:46
Why? All entries are already blue due to everymath @Skillmon – David Carlisle Jun 02 '18 at 07:29
@DavidCarlisle whoopsie, missed that. – Skillmon Jun 02 '18 at 07:32
What would you suggest as an alternative to \everydisplay=\expandafter{\the\everydisplay\color{red} if a person wants all display-math material to be rendered in red? – Mico Jul 03 '20 at 09:28
@Mico there's some work going on to improve hook support generally but you could use the environment hooks provided by etoolbox to add it to \begin{equation} and other display envs. – David Carlisle Jul 03 '20 at 09:53
Many thanks for providing this pointer. – Mico Jul 03 '20 at 12:19
Your answer turned out to be wonderfully helpful while I was updating this answer to get around complications caused by trying to use \everydisplay. Thanks again! – Mico Jul 03 '20 at 14:26

Bernard · Accepted Answer · 2020-07-03T08:30:37.683

Using alignat* and replacing your construct, as pointed by @David Carlisle with a simple \everymath{color{myblue}} makes the code compile (almost) normally. B.t.w. you'll obtain almost the same colour using MidnightBlue (one of the colours defined by the svgnames option of xcolor:

\documentclass[10pt,landscape,a4paper, svgnames, x11names]{article}
\usepackage[utf8]{inputenc}
\usepackage[ngerman]{babel}
\usepackage[utopia,sfscaled]{mathdesign}
\usepackage{amsmath}
\usepackage{upgreek}
\usepackage{bm}
\usepackage{multicol}
\setlength{\columnseprule}{0.5pt}
\usepackage[top=0mm,bottom=1mm,left=1mm,right=1mm]{geometry}
\usepackage{lipsum}
\usepackage[framemethod=tikz]{mdframed}
\usepackage{microtype}
\let\bar\overline
\definecolor{myblue}{cmyk}{1,.72,0,.38}
%\everymath\expandafter{\the\everymath \color{myblue}}
%\everydisplay\expandafter{\the\everydisplay \color{myblue}}
\everymath{\color{MidnightBlue}}
\newcommand{\header}{
\begin{mdframed}[style=header]
\footnotesize
Math cheat sheet \
Page~\thepage~of~3
\end{mdframed}
}
\makeatletter
\renewcommand{\section}{@startsection{section}{1}{0mm}%
                            {.2ex}%
                            {.2ex}%x
                            {\sffamily\bfseries}}
\makeatother
\begin{document}
\small
\begin{multicols}{4}
\header
\columnbreak
\subsection{Ableitungen}
\begin{alignat}{2}
f(x)&=u(x)+v(x)&{}\rightarrow f'(x)&=u'(x)+v'(x) \
f(x)&=\lambdau(x)&{}\rightarrow f'(x)&=\lambdau'(x) \
f(x)&=u(x)v(x)&{}\rightarrow f'(x)&=u'(x)v(x)+u(x)v'(x) \
f(x)&=u(v(x))&{}\rightarrow f'(x)&=u'(v(x))v'(x) \
f(x)&=\frac{u(x)}{v(x)}&{}\rightarrow f'(x)&=\frac{u'(x)v(x)+u(x)v'(x)}{[v(x)^2]}
\end{alignat}
\end{multicols*}
\end{document}

+1 for stealing my tick:-) – David Carlisle Jun 05 '18 at 21:03 — David Carlisle, Jun 05 '18 at 21:03
@DavidCarlisle: — Borrowed, mylord! ;o) – Bernard Jun 05 '18 at 21:13 — Bernard, Jun 05 '18 at 21:13

set tabular/align width within landscape multicols

2 Answers2