For example, there are currently 103 questions tagged
abstract-algebra with no top-level tag. I hoped to get this number down to 100 - that's why my several recent edits were retags of questions having this tag. It seems that choosing a closed question was a mistake. (Although as I wrote in my answer on meta, I still think that if the question stays on MO - even closed - it is better if it is correctly tagged.)
In Hairer's notes A Theory of Regularity Structures he defines automorphisms of a regularity structure on page 28. I will recall the definition here:
Is there any way of extending this to morphisms between different regularity structures? For example, one would probably want the polynomial reg...
Guidelines to prove that $2^{\sqrt{2}}$ is a transcendental number? question bumped into https://mathoverflow.net/ after making an edit.
I am not sure if that adds anything to the question.
Should there be restriction on who edits a closed question? Even though if it is just tags. How about re...
Has there been any work on homotopy Nambu brackets
or even better on strong homotopy Nambu brackets??
Ordinary Nambu brackets appear most recently in work of Takhtajan.
