Chebyshev polynomials and Gram determinants from the Möbius band

Fuente: arXiv
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Autores principales: Christiana, Anthony, Ibarra, Dionne, Montoya-Vega, Gabriel
Formato: Preprint
Publicado: 2025
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author Christiana, Anthony
Ibarra, Dionne
Montoya-Vega, Gabriel
author_facet Christiana, Anthony
Ibarra, Dionne
Montoya-Vega, Gabriel
contents This article explores the connection between Chebyshev polynomials and knot theory, specifically in relation to Gram determinants. We reveal intriguing formulae involving the Chebyshev polynomial of the first and second kind. In particular we show that for Mersenne numbers, $M_k=2^k-1$ where $k\geq 2$, the $M_k$-th Chebyshev polynomial of the second kind is the product of Chebyshev polynomials of the first kind. We then discuss the Gram determinant of type $(Mb)_1$, restate the conjecture of its closed formula in terms of mostly products of Chebyshev polynomials of the second kind, and prove a factor of the determinant that supports the conjecture. We also showcase an algorithm for calculating the Gram determinant's corresponding matrix. Furthermore, we restate Qi Chen's conjectured closed formula for the Gram determinant of type Mb and discuss future directions.
format Preprint
id arxiv_https___arxiv_org_abs_2504_16439
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Chebyshev polynomials and Gram determinants from the Möbius band
Christiana, Anthony
Ibarra, Dionne
Montoya-Vega, Gabriel
Geometric Topology
Primary: 57K10. Secondary: 57K31
This article explores the connection between Chebyshev polynomials and knot theory, specifically in relation to Gram determinants. We reveal intriguing formulae involving the Chebyshev polynomial of the first and second kind. In particular we show that for Mersenne numbers, $M_k=2^k-1$ where $k\geq 2$, the $M_k$-th Chebyshev polynomial of the second kind is the product of Chebyshev polynomials of the first kind. We then discuss the Gram determinant of type $(Mb)_1$, restate the conjecture of its closed formula in terms of mostly products of Chebyshev polynomials of the second kind, and prove a factor of the determinant that supports the conjecture. We also showcase an algorithm for calculating the Gram determinant's corresponding matrix. Furthermore, we restate Qi Chen's conjectured closed formula for the Gram determinant of type Mb and discuss future directions.
title Chebyshev polynomials and Gram determinants from the Möbius band
topic Geometric Topology
Primary: 57K10. Secondary: 57K31
url https://arxiv.org/abs/2504.16439