Topological steps toward the Homflypt skein module of the lens spaces L(p,1) via braids

Ioannis Diamantis, Sofia Lambropoulou*, Jozef Przytycki

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review


In this paper, we work toward the Homflypt skein module of the lens spaces L(p, 1), S(L(p, 1)) using braids. In particular, we establish the connection between S(ST), the Homflypt skein module of the solid torus ST, and S(L(p, 1)) and arrive at an infinite system, whose solution corresponds to the computation of S(L(p, 1)). We start from the Lambropoulou invariant X for knots and links in ST, the universal analog of the Homflypt polynomial in ST, and a new basis,., of S(ST) presented in [I. Diamantis and S. Lambropoulou, A new basis for the Homflypt skein module of the solid torus, J. Pure Appl. Algebra 220(2) (2016) 577-605,, arXiv: 1412.3642[math. GT]]. We show that S(L(p, 1)) is obtained from S(ST) by considering relations coming from the performance of braid band move(s) [bbm] on elements in the basis., where the bbm are performed on any moving strand of each element in.. We do that by proving that the system of equations obtained from diagrams in ST by performing bbm on any moving strand is equivalent to the system obtained if we only consider elements in the basic set.. The importance of our approach is that it can shed light on the problem of computing skein modules of arbitrary c.c.o. 3-manifolds, since any 3-manifold can be obtained by surgery on S-3 along unknotted closed curves. The main difficulty of the problem lies in selecting from the infinitum of band moves some basic ones and solving the infinite system of equations.
Original languageEnglish
Article number1650084
JournalJournal of Knot Theory and Its Ramifications
Issue number14
Publication statusPublished - 2016
Externally publishedYes


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