Timeline for Can a $W^{1,2}$ map from the disk to the circle restrict to a degree one map on the boundary?
Current License: CC BY-SA 3.0
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| May 6, 2018 at 18:41 | comment | added | Piotr Hajlasz | Since you were interested in the question you might look at my answer. I do not wee right away why the fact that $W^{1,2}(D^2,S^1)$ is path connected implies that the degree of the map on the boundary has to be zero. | |
| Feb 21, 2017 at 9:15 | history | answered | Denis Serre | CC BY-SA 3.0 |