Slice‐torus link invariants, combinatorial invariants and positivity conditions
نویسندگان
چکیده
We prove some necessary conditions for a link to be either concordant quasi-positive link, quasi-positive, positive or the closure of braid. The main applications our results are characterisation links with unlinking numbers 1 and 2, combinatorial criterion test if is Finally, we compile table all positive-braid prime less than 8 crossings.
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ژورنال
عنوان ژورنال: Bulletin of The London Mathematical Society
سال: 2021
ISSN: ['1469-2120', '0024-6093']
DOI: https://doi.org/10.1112/blms.12485