File weyl_arxiv.Rnw is basically the same as the vignette
(vignettes/weyl.Rmd) but modified for arxiv. 

Weave  'weyl_arxiv.Rnw' with something like

R CMD Sweave weyl_arxiv.Rnw

(that takes about a minute).  This will create weyl_arxiv.tex.

To latex weyl_arxiv.tex, you will need a couple of auxiliary files:

* arxiv.sty from https://github.com/kourgeorge/arxiv-style
* orcid.png, from https://orcid.org/signin
* weyl.png, the hexsticker, copied from man/figures
* weyl.bib, the bibliography, copied from vignettes/

Then 

pdflatex weyl_arxiv
bibtex weyl_arxiv
pdflatex weyl_arxiv
pdflatex weyl_arxiv

will create weyl_arxiv.pdf and weyl_arxiv.bbl

These files will have to be uploaded to arxiv for it to process
weyl_arxiv.tex; remember to upload weyl_arxiv.bbl as well.

NOTE: the tex file, weyl_arxiv.tex, is NOT under version control.

