What is a set of moves to combinatorially describe regular homotopies of (smooth) immersions $S^1\to \mathbb R^2$?
2026-03-29 03:36:18.1774755378
Moves for regular homotopies of immersions of $S^1$ in the plane
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IIRC (I can't find a good reference at the moment), one needs just two «Whitney moves»: