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Research Papers
Crossing number of (closed) homogeneous braids
I. S. Alekseev Steklov Mathematical Institute of Russian Academy of Sciences
Abstract:
We apply the Polyak and Brandenbursky invariants to estimate the crossing number of (closed) braids and extend the previous minimality criteria for diagrams of positive and alternating braids to the case of homogeneous braids. In particular, we prove that a diagram of a homogeneous braid is minimal if and only if this diagram is homogeneous. These results lay the groundwork for a potential solution to the recognition problem for homogeneous knots and links. The approach we develop is conceptually similar to the method of recognizing alternating links based on Tate conjectures.
Keywords:
braid, knot, link, tangle, polynomial invariant, crossing number, positive, alternating, homogeneous, Tait conjectures, braid group, positive braid monoid, locally free group, right-angled Artin group.
Received: 02.06.2024
Citation:
I. S. Alekseev, “Crossing number of (closed) homogeneous braids”, Algebra i Analiz, 36:5 (2024), 86–100
Linking options:
https://www.mathnet.ru/eng/aa1935 https://www.mathnet.ru/eng/aa/v36/i5/p86
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