Write huge equation (width 8 meters)

Question

I'm desperately trying to type this huge equation in an A4 page.

Any reasonable solution would be ok (including splitting the equation). The problem is that the total width is 800cm. Hence this would require more than 20 lines for a single equation (considering A4 width is 29.7cm).

where are you publishing this? International billboard of mathematics? — percusse, Jul 17 '17 at 13:51
You can copy and paste your document here. The web site you are using requires a logon. — John Kormylo, Jul 17 '17 at 13:58
I know it does not make sense to type it but I have to do it. @egreg — Marcex, Jul 17 '17 at 14:06
Well, you're asking to manage a formula built up in the most awful way, 80K long. No, thanks. — egreg, Jul 17 '17 at 14:30
It's outrageous but still a valid question. Please stop voting to close everything. — percusse, Jul 17 '17 at 14:37
800cm is more than \maxdimen (about 575.75 cm). So it is greater than the maximum width. — Schweinebacke, Jul 17 '17 at 14:46
@percusse I pondered before voting to close. It's not a valid question, for several reasons. — egreg, Jul 17 '17 at 15:06
@percusse No research, no attempt, just preposterous code produced by a dumb machine. Do it for me. — egreg, Jul 17 '17 at 15:11
@egreg I've tried you can't paste (89k characters) it but includes a valid MWE. Dumb machine who knows? And definitely not do it for me. — percusse, Jul 17 '17 at 15:13
@egreg Maybe it's time for a lipsum package that spits out random math? — percusse, Jul 17 '17 at 15:14
@percusse "lipsum for math" already exists. It's called "mathematica". — alephzero, Jul 17 '17 at 16:01
it is easy to allow linebreaking in sqrt and frac, but the hard part is {...}^2 do you need to use exactly that input or could such things be marked up as (say) \power{...}{2} which would allow a suitable breakable version to be defined. — David Carlisle, Jul 17 '17 at 20:14
This is similar to this question, but harder because of the spurious brace groups in the input which prevent line breaking https://tex.stackexchange.com/questions/358072/suggestion-for-automatic-alignment-of-large-equations/358073#358073 — David Carlisle, Jul 17 '17 at 20:16
@DavidCarlisle The latex input is obtained from Matlab. My idea was to print that output directly since that equation is just one out of a list of similar equations. — Marcex, Jul 17 '17 at 20:53
Just for curiosity, could you explain to us the meaning of such a monster? — CarLaTeX, Jul 17 '17 at 21:17
@MarcelloFiducioso You should never ever and ever use matlab latex output. There is simply no excuse. You don't use it. Just forget it exists. — percusse, Jul 18 '17 at 15:45
@MarcelloFiducioso: Please consider accepting one of the two given answers. — CampanIgnis, Jul 24 '17 at 01:04

David Carlisle · Answer 1 · 2017-07-17T21:28:12.827

The hardest part is getting rid of the spurious {} groups, without that you would just need simple inline definitions as in

Suggestion for automatic alignment of large equations

Use $\z ... \zstop $ not begin{equation}...\end{equation} otherwise the math is unchanged.

\documentclass[a4paper]{article}
%\usepackage[paperwidth=500cm,paperheight=21cm,margin=1in]{geometry}
\usepackage[utf8]{inputenc}
\addtolength\textwidth{6cm}
\addtolength\oddsidemargin{-3cm}
\showboxbreadth10000
\showboxdepth10000
\begin{document}
\let\left\relax
\let\right\relax
\def\sqrt#1{(#1)^{{1\over2}}% image uses bad version: \def\sqrt#1{1/(#1)}
\def\frac#1#2{(#1)/(#2)}
\def\mathrm#1{\begingroup\fam0 #1\endgroup}
\let\!\relax% they should never have been there
\def\z#1{%
\ifx\frac#1\let\next\ztwo
\else\ifx\sqrt#1\let\next\zone
\else\ifx\mathrm#1\let\next\zone
\else\ifx^#1\let\next\zone
\else\ifx_#1\let\next\zone
\else\ifx\dot#1\let\next\zone
\else\let\next\znone
\fi\fi\fi\fi\fi\fi
\next{#1}}
\def\ztwo#1#2#3{#1{\z#2\zstop}{\z#3\zstop}\z}
\def\zone#1#2{#1{\z#2\zstop}\z}
\def\znone#1{\zonex#1}
\def\zonex#1{#1\z}
\def\zstop#1{}
\begin{center}
$\z
 \frac{...}{...}
....
\frac{...}170}
\zstop$
\end{center}


\end{document}

The square root is not the reciprocal. – egreg Jul 17 '17 at 21:10 — egreg, Jul 17 '17 at 21:10
@egreg minor details:-) \def\sqrt#1{(#1)^{{1\over2}} – David Carlisle Jul 17 '17 at 21:12 — David Carlisle, Jul 17 '17 at 21:12
Not that anybody would notice. ;-) – egreg Jul 17 '17 at 21:12 — egreg, Jul 17 '17 at 21:12

CampanIgnis · Accepted Answer · 2017-07-24T01:05:30.197

4

The following (technically) works with your dropbox-file. I just excluded your formula from the example. As https://tex.stackexchange.com/users/9057/schweinebacke mentioned your formula is bigger than the maximum width so you need to introduce line breaks. It is quite easy to find the spots with syntax highlighting.

\documentclass{scrartcl}
\usepackage[paperwidth=16383.99999pt,paperheight=100cm,margin=1in]{geometry}
\usepackage[utf8]{inputenc}
\usepackage{amsmath}

\begin{document}

\begin{align*}
1=1\forall 1 \\\textup{Your formula here}
\end{align*}

\end{document}

Your might try gather instead of align in case you prefer a centered alignment.

Here is an image of the beauty:

So if anyone knows how to extend \maxdimen, this would be welcomed. Compare What's the absolute largest paper size permissible with pdflatex?. Note 16383.99999pt*2.54/72.27*cm/pt≈5.75831741726858m.

edited Jul 24 '17 at 01:05

answered Jul 17 '17 at 14:42

CampanIgnis

4,624

Can you include the result screenshot so that it's not taken as a tongue-in-cheek answer? – percusse Jul 17 '17 at 14:44
@percusse Done. But I needed to reduce the resolution. – CampanIgnis Jul 17 '17 at 14:49
1

No worries. It's probably not meant for reading anyways – percusse Jul 17 '17 at 14:50
Thank you for your help. To be honest I do not succeed with your code but I obtained a similar result using: \newcommand{\Scale}[2][4]{\scalebox{#1}{$#2$}}% \newcommand{\Resize}[2]{\resizebox{#1}{!}{$#2$}}% \begin{equation} \Scale[0.02]{equation here} \end{equation} – Marcex Jul 17 '17 at 14:54
If I scroll all the way to the right, it looks cut-off. – Pi Fisher Jul 17 '17 at 14:55
2

@CampanIgnis A nice wallpaper :) – samcarter_is_at_topanswers.xyz Jul 17 '17 at 15:22
\maxdimen is not a PDF limit but a TeX limit. – Schweinebacke Jul 17 '17 at 15:28
@Schweinebacke So is there a way to extend it? – CampanIgnis Jul 17 '17 at 15:29
No. Not without changing TeX itself. And the result wouldn't be TeX. See: What's the absolute largest paper size permissible with pdflatex? – Schweinebacke Jul 17 '17 at 15:33
@Schweinebacke Do they not refer to a maximum size of approximately 508cm in PDF 1.6? – CampanIgnis Jul 17 '17 at 15:40
1

In PDF 1.5. From AFAIK PDF 1.6 you can change the unit size. I've never testes, how to do so using pdftex. But I think this is theory only. Because it doesn't really matter: You cannot have paper or text area width of 800cm with TeX. – Schweinebacke Jul 17 '17 at 15:51
I hoped that LuaTeX would be more flexible here. – CampanIgnis Jul 17 '17 at 15:58
@CampanIgnis It would not longer count as TeX. By definition. – cfr Jul 24 '17 at 01:44
@cfr That is what Schweinebacke already said. – CampanIgnis Jul 24 '17 at 11:19

Write huge equation (width 8 meters)

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