Kulakova–Lando conjecture on the \mathfrak{sl}_2 weight system and chord diagrams

Let DD be a chord diagram with 2m2m chords, where m1m\geq 1. Let π2m(D)\pi_{2m}(D) be its projection to the primitive part, let wsl2,2w_{\mathfrak{sl}_2,2} be the weight system associated with sl2\mathfrak{sl}_2 and 2,2\langle\cdot,\cdot\rangle, let Rm(D)R_m(D) denote the corresponding coefficient, and let c2c_2 be the quadratic Casimir element.

Kulakova–Lando conjecture.

wsl2,2(π2m(D))=2Rm(D)c2m+ terms of degree less than m in c2.w_{\mathfrak{sl}_2,2}(\pi_{2m}(D))=2R_m(D)c_2^m+\text{ terms of degree less than }m\text{ in }c_2.

The conjecture is a consequence of the Melvin–Morton–Rozansky conjecture, which has been proved, so this statement is solved.

Sources & referencesView supporting material

Primary source

Dror Bar-Natan and Huan T. Vo, “Proof of a conjecture of Kulakova et al. related to the sl_2 weight system”, arXiv:1401.0754 (2014).

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