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Questions of the kind "What's the name for a X that satisfies property Y?"
21
votes
Pushforward and pullback.
I do this all the time, and no one complains, but I do not feel that it is right...
I think a part of the problem is that the word "pullback" has two distinct meanings, which nevertheless are relate …
6
votes
Accepted
Terminology question on covering spaces
"Fool's covering spaces" are very close to overlays of R. H. Fox (see this paper in the first place and also this one), which I think are still better: they retain all nice properties of "fool's cover …