Skip to main content
5 events
when toggle format what by license comment
Sep 1, 2016 at 14:19 comment added jaco @IgorKhavkine Yes, I think I can show this for my sets, but I think it is even more than contractible, I know contractible is not enough
Sep 1, 2016 at 12:30 answer added Misha timeline score: 6
Sep 1, 2016 at 7:23 comment added Igor Khavkine Do you mean perhaps that there is a homotopy of $A$ that simultaneously retracts all of its points it to a subset of $C$?
Sep 1, 2016 at 2:35 history edited jaco CC BY-SA 3.0
added 11 characters in body
Aug 31, 2016 at 22:55 history asked jaco CC BY-SA 3.0