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It follows from earlier work of Silver-Williams and the authors that twisted Alexander polynomials detect the unknot and the Hopf link. We now show that twisted Alexander polynomials also detect the trefoil and the figure-8 knot, that…

Geometric Topology · Mathematics 2019-08-15 Stefan Friedl , Stefano Vidussi

Using the Fourier expansion of Markov traces for Ariki-Koike algebras over $\mathbb{Q}(q,u_{1},...,u_{e})$, we give a direct definition of the Alexander polynomials for mixed links. We observe that under the corresponding specialization of…

Representation Theory · Mathematics 2011-12-13 Hitoshi Yamanaka

This paper presents division polynomials for twisted Edwards curves. Their chief property is that they characterise the $n$-torsion points of a given twisted Edwards curve. We also present results concerning the coefficients of these…

Algebraic Geometry · Mathematics 2008-09-26 Richard Moloney , Laura Hitt , Gary McGuire

Twisted Alexander invariants have been defined for any knot and linear representation of its group. The invariants are generalized for any periodic representation of the commutator subgroup of the knot group. Properties of the new twisted…

Geometric Topology · Mathematics 2010-12-22 Daniel S. Silver , Susan G. Williams

We observe the twisted Alexander polynomial for metabelian representations of knot groups into SL(2,C) and study relations to the characterizations of metabelian representations in the character varieties. We give a factorization of the…

Geometric Topology · Mathematics 2013-07-12 Yoshikazu Yamaguchi

Murasugi discovered two criteria that must be satisfied by the Alexander polynomial of a periodic knot. We generalize these to the case of twisted Alexander polynomials. Examples demonstrate the application of these new criteria, including…

Geometric Topology · Mathematics 2009-02-26 Jonathan A Hillman , Charles Livingston , Swatee Naik

X.S. Lin's original definition of twisted Alexander knot polynomial is generalized for arbitrary finitely presented groups. J. Cha's fibering obstruction theorem is generalized. The group of a nontrivial virtual knot shown by L. Kauffman to…

Geometric Topology · Mathematics 2009-08-14 Daniel S. Silver , Susan G. Williams

We define a family of virtual knots generalizing the classical twist knots. We develop a recursive formula for the Alexander polynomial $\Delta_0$ (as defined by Silver and Williams) of these virtual twist knots. These results are applied…

Geometric Topology · Mathematics 2018-08-14 Isaac Benioff , Blake Mellor

In this paper we will study properties of twisted Alexander polynomials of knots corresponding to metabelian representations. In particular we answer a question of Wada about the twisted Alexander polynomial associated to the tensor product…

Geometric Topology · Mathematics 2021-03-16 Hans U. Boden , Stefan Friedl

If phi: G-->G' is a surjective homomorphism, we prove that the twisted Alexander polynomial of G is divisible by the twisted Alexander polynomial of G'. As an application, we show non-existence of surjective homomorphism between certain…

Geometric Topology · Mathematics 2014-10-01 Teruaki Kitano , Masaaki Suzuki , Masaaki Wada

We investigate the twisted Alexander polynomial of a 2-bridge knot associated to a Fox coloring. For several families of 2-bridge knots, including but not limited to, torus knots and genus-one knots, we derive formulae for these twisted…

Geometric Topology · Mathematics 2012-06-12 Jim Hoste , Patrick D. Shanahan

Twisted knot theory introduced by M. Bourgoin is a generalization of knot theory. It leads us to the notion of twisted virtual braids. In this paper we show theorems for twisted links corresponding to the Alexander theorem and the Markov…

Geometric Topology · Mathematics 2023-10-06 Komal Negi , Madeti Prabhakar , Seiichi Kamada

In this paper we apply the twisted Alexander polynomial to study the fibering and genus detecting problems for oriented links. In particular we generalize a conjecture of Dunfield, Friedl and Jackson on the torsion polynomial of hyperbolic…

Geometric Topology · Mathematics 2016-10-24 Takayuki Morifuji , Anh T. Tran

Let M be a 4-manifold which admits a free circle action. We use twisted Alexander polynomials to study the existence of symplectic structures and the minimal complexity of surfaces in M. The results on the existence of symplectic structures…

Geometric Topology · Mathematics 2008-06-16 Stefan Friedl , Stefano Vidussi

Based on a vanishing theorem for non-fibered knots due to Friedl and Vidussi, we define the twisted Alexander vanishing order of a knot to be the order of the smallest finite group such that the corresponding twisted Alexander polynomial is…

Geometric Topology · Mathematics 2025-04-25 Katsumi Ishikawa , Takayuki Morifuji , Masaaki Suzuki

We develop a dimer model for the Alexander polynomial of a knot. This recovers Kauffman's state sum model for the Alexander polynomial using the language of dimers. By providing some additional structure we are able to extend this model to…

Geometric Topology · Mathematics 2014-05-14 Moshe Cohen , Oliver T. Dasbach , Heather M. Russell

Let L be an oriented (d+1)-component link in the 3-sphere, and let L(q) be the d-component link in a homology 3-sphere that results from performing 1/q-surgery on the last component. Results about the Alexander polynomial and twisted…

Geometric Topology · Mathematics 2012-02-08 Daniel S. Silver , Susan G. Williams

We develop a diagrammatic formalism for calculating the Alexander polynomial of the closure of a braid as a state-sum. Our main tools are the Markov trace formulas for the HOMFLY-PT polynomial and Young's semi-normal representations of the…

Geometric Topology · Mathematics 2013-08-14 Samson Black

In this paper, we compute Alexander polynomials of a torus curve C of type (2, 5), C : f(x, y) = f_2(x, y)^5 + f_5(x, y)^2 = 0, under the assumption that the origin O is the unique inner singularity and f2 = 0 is an irreducible conic. We…

Algebraic Geometry · Mathematics 2008-10-09 M. Kawashima , M. Oka

We present explicit infinite families of twisted torus knots that are not fibered. Our approach relies on an explicit formula for the Alexander polynomial derived in our previous work. We show that the leading coefficients of the Alexander…

Geometric Topology · Mathematics 2026-03-09 Adnan , Kyungbae Park