If I understood it correctly an embedding is an immersion $\phi:M \rightarrow N$ that is a homeomorphism and where $\phi (M) \subset N$. To which condition contradicts an immersion with a self-intersection? (An example is $\phi(t)=(t^3-4t,t^2-4)$)
2026-02-23 01:01:02.1771808462
Why can't an embedding have self-intersections?
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