Author: Urs Format: MarkdownItexa stub entry, for the moment just to satisfy requested links at *[[meros]]*
<a href="https://ncatlab.org/nlab/revision/relational+set+theory/1">v1</a>, <a href="https://ncatlab.org/nlab/show/relational+set+theory">current</a>
a stub entry, for the moment just to satisfy requested links at meros