Timeline for Topological spaces without retracts
Current License: CC BY-SA 4.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 23, 2018 at 15:41 | comment | added | Najib Idrissi | @THC Your question got three downvotes and one upvote, this answer got two upvotes for some reason. | |
| Nov 23, 2018 at 15:40 | comment | added | THC | @NajibIdrissi : I miss-formulated (so I will edit my question). Two downvotes, by the way ... | |
| Nov 23, 2018 at 15:26 | comment | added | Najib Idrissi | Just take $B = \Omega$ and $r = \operatorname{id}$. Besides the empty space retracts to itself. (If you reply that you only consider proper subspaces, then you need to remove singletons from your answer.) (Also, two upvotes for an answer to an undergrad-level question?) | |
| Nov 23, 2018 at 15:10 | history | answered | Dominic van der Zypen | CC BY-SA 4.0 |