Invariants of knot diagrams
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- Hass, J. & Nowik, T. Math. Ann. (2008) 342: 125. doi:10.1007/s00208-008-0224-5
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We construct a new order 1 invariant for knot diagrams. We use it to determine the minimal number of Reidemeister moves needed to pass between certain pairs of knot diagrams.