Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10118815 | Journal of Combinatorial Theory, Series A | 2019 | 18 Pages |
Abstract
In the theory of finite type Vassiliev knot invariants, the universal sl2 weight system maps the chord diagrams to polynomials in a single variable with integer coefficients. In this paper, we define a family of polynomials that generalize the Kreweras triangle (known to refine the normalized median Genocchi numbers), and we show how it appears in this weight system.
Keywords
Related Topics
Physical Sciences and Engineering
Mathematics
Discrete Mathematics and Combinatorics
Authors
Ange Bigeni,