Author: Tim_Porter Format: MarkdownItexTo link the two brothers by their joint paper on modal S4.
<a href="https://ncatlab.org/nlab/revision/diff/Eric+Goubault/7">diff</a>, <a href="https://ncatlab.org/nlab/revision/Eric+Goubault/7">v7</a>, <a href="https://ncatlab.org/nlab/show/Eric+Goubault">current</a>
To link the two brothers by their joint paper on modal S4.