Backup stash

This subsection of my realm is devoted to storing old versions of pages I have replaced with completely rewritten content or which have been surpassed by a refactoring of the presentation of the relevant mathematical field(s).

These pages will not be updated to reflect e.g. redirects after they've been moved here. They can be deleted at any time, although they will usually persist for a few months after being moved here.

A full list of backups is available here.