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Results tagged with dg.differential-geometry
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user 10333
Complex, contact, Riemannian, pseudo-Riemannian and Finsler geometry, relativity, gauge theory, global analysis.
8
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answers
602
views
Can a smooth, immersed loop in R^2 become not nullhomotopic by removing a point?
ATT
More precisely, let $\gamma :S^1\rightarrow R^2$ be a smooth immersed loop, the question is whether it is true that there is a point $p\in R^2-\gamma(S^1)$ such that $\gamma$ is not homotopic to …
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