Typeset Big-O complexities with TeX-style notation in libraries/base
See 2 for an example.
- *Task:** Replace all italic Big-Os in libraries/base with TeX-style notation.
Please Note: I'm creating this ticket in trac, because the GitLab migration doesn't seem to be finished, yet. If this leads to any troubles: Please don't care about this ticket - When I see that this ticket isn't migrated, I'll simply re-create it in GitLab.