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Minimal unknotting sequences of Reidemeister moves containing unmatched RII moves
Reidemeister moves RII moves
2010/11/23
Arnold introduced invariants $J^+$, $J^-$ and $St$ for generic planar curves.
It is known that both $J^+ /2 + St$ and $J^- /2 + St$ are invariants for generic spherical curves.
Applying these inv...