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Apr 1, 2022 at 0:03 vote accept Michael Albanese
Mar 30, 2022 at 13:28 history edited Michael Albanese CC BY-SA 4.0
added 5 characters in body
Mar 30, 2022 at 8:34 comment added Michael Albanese Thanks. I really should have thought of this myself (I was looking at Stallings' Theorem yesterday). The homotopy equivalence version of the question is still open, but that's probably the least interesting of the three.
Mar 30, 2022 at 8:24 history edited Geva Yashfe CC BY-SA 4.0
Fixed a misattributed theorem
Mar 30, 2022 at 8:21 history answered Geva Yashfe CC BY-SA 4.0