Timeline for How is the behaviour of a deformation retract under a fibration? [duplicate]
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
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| Mar 15 at 11:07 | history | closed |
David White Dave Benson Daniele Tampieri Stefan Waldmann Dag Oskar Madsen |
Duplicate of In a fibration, can a deformation retraction of the base be lifted to the total space? | |
| Mar 13 at 22:29 | comment | added | David White | Please read Allen Hatcher's answer. That one focuses on deformation retractions. The other answers are about strong deformation retractions. The answer to your question is "yes" and Hatcher explains why. Just draw the lifting diagram he describes. | |
| Mar 13 at 21:29 | comment | added | Alvaro Sopeña | I know, I've read this answer a lot of times, but I don't really understand the answer at all | |
| Mar 13 at 20:27 | review | Close votes | |||
| Mar 15 at 11:07 | |||||
| Mar 13 at 20:07 | comment | added | David White | Hello, and welcome to MathOverflow! Your question was asked here several years ago, and has a great answer: mathoverflow.net/questions/178509/…. It's a great question, and I hope the answer there helps you. Because we prefer not to have duplicate questions, I'll vote to close this one as a duplicate of the other. | |
| S Mar 13 at 18:34 | review | First questions | |||
| Mar 13 at 22:46 | |||||
| S Mar 13 at 18:34 | history | asked | Alvaro Sopeña | CC BY-SA 4.0 |