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Using the covering involution on the double branched cover of the three-sphere branched along a knot, and adapting ideas of Hendricks-Manolescu and Hendricks-Hom-Lidman, we define new knot invariants and apply them to deduce novel linear…

Geometric Topology · Mathematics 2019-05-29 Antonio Alfieri , Sungkyung Kang , Andras I. Stipsicz

We continue the program of systematic study of extended HOMFLY polynomials. Extended polynomials depend on infinitely many time variables, are close relatives of integrable tau-functions, and depend on the choice of the braid representation…

High Energy Physics - Theory · Physics 2012-09-11 H. Itoyama , A. Mironov , A. Morozov , An. Morozov

We re-build the quantum sl2 unified invariant of knots $F_{\infty}$ from braid groups' action on tensors of Verma modules. It is a two variables series having the particularity of interpolating both families of colored Jones polynomials and…

Geometric Topology · Mathematics 2022-01-03 Jules Martel , Sonny Willetts

In this paper, we study 2-representations of 2-quantum groups (in the sense of Rouquier and Khovanov-Lauda) categorifying tensor products of irreducible representations. Our aim is to construct knot homologies categorifying…

Geometric Topology · Mathematics 2013-05-06 Ben Webster

The A-polynomial is a knot invariant related to the space of $SL_2(\mathbb{C})$ representations of the knot group. In this paper our interests lies in the logarithmic Gauss map of the A-polynomial. We develop a homological point of view on…

Geometric Topology · Mathematics 2021-11-25 Leo Benard , Vincent Florens , Adrien Rodau

Let $G=\mathrm{SL}(3,\mathbb{C})$. We construct an element of $G$-equivariant $K$-homology from the Bernstein-Gelfand-Gelfand complex for $G$. This furnishes an explicit splitting of the restriction map from the Kasparov representation ring…

Operator Algebras · Mathematics 2009-11-13 Robert Yuncken

In this paper we will make use of the Mackaay-Vaz approach to the universal $\mathfrak{sl}_3$-homology to define a family of cycles (called $\beta_3$-invariants) which are transverse braid invariants. This family includes Wu's…

Geometric Topology · Mathematics 2020-07-29 Carlo Collari

In this paper we introduce a chain complex $C_{1 \pm 1}(D)$ where D is a plat braid diagram for a knot K. This complex is inspired by knot Floer homology, but it the construction is purely algebraic. It is constructed as an oriented cube of…

Geometric Topology · Mathematics 2018-11-01 Akram Alishahi , Nathan Dowlin

The classical invariant theory for the queer Lie superalgebra $\mathfrak{q}_n$ investigates its invariants in the supersymmetric algebra $$\mathcal{U}_{s,l}^{r,k}:=\mathrm{Sym}\left(V^{\oplus r}\oplus \Pi(V)^{\oplus k}\oplus V^{*\oplus…

Representation Theory · Mathematics 2023-08-28 Zhihua Chang , Yongjie Wang

We introduce topological invariants of knots and braid conjugacy classes, in the form of differential graded algebras, and present an explicit combinatorial formulation for these invariants. The algebras conjecturally give the relative…

Geometric Topology · Mathematics 2014-11-11 Lenhard Ng

Lawrence Roberts, extending the work of Ozsvath-Szabo, showed how to associate to a link, L, in the complement of a fixed unknot, B, in S^3, a spectral sequence from the Khovanov homology of a link in a thickened annulus to the knot Floer…

Geometric Topology · Mathematics 2013-03-25 J. Elisenda Grigsby , Stephan M. Wehrli

Kronheimer and Mrowka asked whether the difference between the four-dimensional clasp number and the slice genus can be arbitrarily large. This question is answered affirmatively by studying a knot invariant derived from equivariant…

Geometric Topology · Mathematics 2024-09-09 Aliakbar Daemi , Christopher Scaduto

We construct knot invariants from solutions to the Yang--Baxter equation associated to appropriately generalized left/right Yetter--Drinfel'd modules over a braided Hopf algebra with an automorphism. When applied to Nichols algebras, our…

Geometric Topology · Mathematics 2024-04-24 Stavros Garoufalidis , Rinat Kashaev

Given a knot K and an irreducible metabelian SL(n,C) representation we establish an equality for the dimension of the first twisted cohomology. In the case of equality, we prove that the representation must have finite image and that it is…

Geometric Topology · Mathematics 2014-09-05 Hans U. Boden , Stefan Friedl

Let M be a closed oriented 3-manifold with first Betti number one. Its equivariant linking pairing may be seen as a two-dimensional cohomology class in an appropriate infinite cyclic covering of the configuration space of ordered pairs of…

Geometric Topology · Mathematics 2013-03-21 Christine Lescop

We employ a solution of the Yang-Baxter equation to construct invariants for knot-like objects. Specifically, we consider a Yang-Baxter state model for the sl(n) polynomial of classical links and extend it to oriented singular links and…

Geometric Topology · Mathematics 2021-12-16 Carmen Caprau , Tsutomu Okano , Danny Orton

We give a complete classification of simple representations of the braid group B_3 with dimension $\leq 5$ over any algebraically closed f ield. In particular, we prove that a simple d-dimensional representation $\rho: B_3 \to GL(V)$ is…

Representation Theory · Mathematics 2007-05-23 Imre Tuba , Hans Wenzl

We use planar 4-valent graphs and a graphical calculus involving such graphs to construct an invariant for balanced-oriented, knotted 4-valent graphs. Our invariant is an extension of the $sl(n)$ polynomial for classical knots and links. We…

Geometric Topology · Mathematics 2026-02-03 Carmen Caprau , Victoria Wiest

Reducing a 6d fivebrane theory on a 3-manifold $Y$ gives a $q$-series 3-manifold invariant $\widehat{Z}(Y)$. We analyse the large-$N$ behaviour of $F_K=\widehat{Z}(M_K)$, where $M_K$ is the complement of a knot $K$ in the 3-sphere, and…

High Energy Physics - Theory · Physics 2022-10-18 Tobias Ekholm , Angus Gruen , Sergei Gukov , Piotr Kucharski , Sunghyuk Park , Piotr Sułkowski

In this paper we prove theorems characterizing the decomposition of equivariant feature spaces, filters and a structural preservation theorem for invariant subspace chains in group equivariant convolutional neural networks(G-CNN).…

Representation Theory · Mathematics 2025-07-14 Bich Van Nguyen , Nguyen Cao Manh Thang