Stratification of 𝑆𝑈(𝑟)-character varieties of twisted Hopf links

Author:

González-Prieto Ángel,Logares Marina,Martínez Javier,Muñoz Vicente

Abstract

We describe the geometry of the character variety of representations of the fundamental group of the complement of a Hopf link with n n twists, namely Γ n = x , y | [ x n , y ] = 1 {\Gamma }_{n}=\langle x,y \,| \, [x^n,y]=1 \rangle into the group S U ( r ) SU(r) . For arbitrary rank, we provide geometric descriptions of the loci of irreducible and totally reducible representations. In the case r = 2 r = 2 , we provide a complete geometric description of the character variety, proving that this S U ( 2 ) SU(2) -character variety is a deformation retract of the larger S L ( 2 , C ) SL(2,\mathbb {C}) -character variety, as conjectured by Florentino and Lawton. In the case r = 3 r = 3 , we also describe different strata of the S U ( 3 ) SU(3) -character variety according to the semi-simple type of the representation.

Publisher

American Mathematical Society

Reference23 articles.

1. The topology of parabolic character varieties of free groups;Biswas, Indranil;Geom. Dedicata,2014

2. Representations of orbifold groups and parabolic bundles;Boden, Hans U.;Comment. Math. Helv.,1991

3. Links and Seifert fiber spaces;Burde, Gerhard;Duke Math. J.,1970

4. On the homotopy type of free group character varieties;Casimiro, Ana;Bol. Soc. Port. Mat.,2016

5. H. Chen and T. Yu, The 𝑆𝐿(2,ℂ)-character variety of the Borromean link, arXiv:2202.07429.

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