I tried building the documents in doc/gap-days-lectures. In lecture4a.tex, I had to change \newcommand to \renewcommand for both \Hom and \Top before LaTeX would accept the document. If you would like those documents to be buildable, it would be good to check whether you have the same issue and update those commands if so.
I tried building the documents in doc/gap-days-lectures. In lecture4a.tex, I had to change \newcommand to \renewcommand for both \Hom and \Top before LaTeX would accept the document. If you would like those documents to be buildable, it would be good to check whether you have the same issue and update those commands if so.