Dehornoy’s ordering of the braid groups extends the subword ordering

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Dehornoy’s Ordering of the Braid Groups Extends the Subword Ordering

Since the ordering is right-invariant this is equivalent to the following, with γ = β1α: Theorem 1′. For any braid γ ∈ Bn and any i ∈ {1, . . . , n − 1} we have γσi > γ. It follows that Dehornoy’s ordering extends the (partial) subword ordering defined in [5]. Theorem 1 was first proved by Laver [8] and Burckel [2] using very different methods. As explained in [8], it can be combined with a the...

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The relationships between braid ordering and the geometry of its closure is studied. We prove that if an essential closed surface F in the complements of closed braid has relatively small genus with respect to the Dehornoy floor of the braid, F is circular-foliated in a sense of Birman-Menasco’s Braid foliation theory. As an application of the result, we prove that if Dehornoy floor of braids a...

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ژورنال

عنوان ژورنال: Pacific Journal of Mathematics

سال: 1999

ISSN: 0030-8730

DOI: 10.2140/pjm.1999.191.183