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Related papers: Skein lasagna modules and handle decompositions

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Morrison, Walker, and Wedrich used the blob complex to construct a generalization of Khovanov-Rozansky homology to links in the boundary of a 4-manifold. The degree zero part of their theory, called the skein lasagna module, admits an…

Geometric Topology · Mathematics 2022-03-24 Ciprian Manolescu , Ikshu Neithalath

We construct analogs of Khovanov-Jacobsson classes and the Rasmussen invariant for links in the boundary of any smooth oriented 4-manifold. The main tools are skein lasagna modules based on equivariant and deformed versions of…

Geometric Topology · Mathematics 2026-03-06 Kim Morrison , Kevin Walker , Paul Wedrich

We construct a variant of Khovanov skein lasagna modules, which takes the Khovanov homology in connected sums of $S^1\times S^2$ defined by Rozansky and Willis as the input link homology. To carry out the construction, we prove…

Geometric Topology · Mathematics 2025-10-08 Qiuyu Ren , Ian Sullivan , Paul Wedrich , Michael Willis , Melissa Zhang

Skein lasagna modules are a recent tool developed for the study of 4-manifolds. We provide general formula for 1-, 2-, and 3-handle attachments for skein modules defined with any functorial link theory in $S^3 \times I$ generalizing…

Geometric Topology · Mathematics 2026-02-23 Gage Martin , Mary Stelow , Mira Wattal

We use Khovanov-Rozansky gl(N) link homology to define invariants of oriented smooth 4-manifolds, as skein modules constructed from certain 4-categories with well-behaved duals. The technical heart of this construction is a proof of the…

Quantum Algebra · Mathematics 2023-03-24 Scott Morrison , Kevin Walker , Paul Wedrich

We construct and study the skein lasagna module obtained by importing the Bar-Natan Khovanov homology package. For 4-manifolds satisfying a non-vanishing condition, we produce pairs of exotic surfaces (with boundary) by using the behavior…

Geometric Topology · Mathematics 2025-05-13 Ian A. Sullivan

This survey reviews recent advances connecting link homology theories to invariants of smooth 4-manifolds and extended topological quantum field theories. Starting from joint work with Morrison and Walker, I explain how functorial link…

Quantum Algebra · Mathematics 2025-10-07 Paul Wedrich

In this paper, we introduce the notion of Floer lasagna modules, which is inspired by the construction of skein lasagna module in [MWW19] by Morrison, Walker and Wedrich. Here we use link Floer homology instead of Khovanov-Rozansky…

Geometric Topology · Mathematics 2022-03-16 Daren Chen

We introduce a new diffeomorphism invariant of smooth compact oriented 4-manifolds $X$ with a framed oriented 1-link $L$ in the boundary, where $L$ may be the empty set, and call it {\it Khovanov-Lipshitz-Sarkar skein lasagna homotopy type}…

Geometric Topology · Mathematics 2026-02-19 Louis H. Kauffman , Igor M. Nikonov , Eiji Ogasa

We construct a Kirby color in the setting of Khovanov homology: an ind-object of the annular Bar-Natan category that is equipped with a natural handle slide isomorphism. Using functoriality and cabling properties of Khovanov homology, we…

Geometric Topology · Mathematics 2022-10-27 Matthew Hogancamp , David E. V. Rose , Paul Wedrich

We show that the Khovanov-Rozansky $\mathfrak{gl}_2$ skein lasagna module distinguishes the exotic pair of knot traces $X_{-1}(-5_2)$ and $X_{-1}(P(3,-3,-8))$, an example first discovered by Akbulut. This gives the first analysis-free proof…

Geometric Topology · Mathematics 2025-12-19 Qiuyu Ren , Michael Willis

In a recent breakthrough, Ren and Willis gave the first analysis-free proof of the existence of exotic compact, orientable 4-manifolds; their main tool is the Khovanov skein lasagna module defined by Morrison, Walker, and Wedrich. In this…

Geometric Topology · Mathematics 2025-12-08 Gheehyun Nahm

We prove a generalised version of finiteness of skein modules for 3-manifolds by including boundary. We show that internal skein modules are holonomic modules over the internal skein algebra of the boundary - a property including finite…

Quantum Algebra · Mathematics 2025-09-29 David Jordan , Iordanis Romaidis

We extend the skein lasagna theory of Morrison-Walker-Wedrich to 4-manifolds with corners and formulate gluing formulas for 4-manifolds with boundary and, more generally, with corners. As an application, we develop a categorical framework…

Geometric Topology · Mathematics 2025-12-08 Sarah Blackwell , Vyacheslav Krushkal , Yangxiao Luo

We study skein modules of 3-manifolds by embedding them into the Hilbert spaces of 4d ${\cal N}=4$ super-Yang-Mills theories. When the 3-manifold has reduced holonomy, we present an algorithm to determine the dimension and the list of…

High Energy Physics - Theory · Physics 2026-02-19 Du Pei

For a commutative Frobenius algebra $A$, we construct a $(2,3,3+\varepsilon)$-dimensional TQFT $\mathsf{AFK}_A$ that assigns to a 3-manifold a skein module of embedded $A$-decorated surfaces. These surface skein modules have been first…

Quantum Algebra · Mathematics 2025-12-03 Leon J. Goertz

Given a Heegaard splitting of a closed 3-manifold, the skein modules of the two handlebodies are modules over the skein algebra of their common boundary surface. The zeroth Hochschild homology of the skein algebra of a surface with…

Geometric Topology · Mathematics 2014-11-18 Michael McLendon

In this paper, we study the Kauffman bracket skein module of closed oriented three-manifolds at a non-multiple-of-four roots of unity. Our main result establishes that the localization of this module at a maximal ideal, which corresponds to…

Geometric Topology · Mathematics 2024-02-28 Mohammad Farajzadeh-Tehrani , Charles Frohman , Joanna Kania-Bartoszynska

The Kauffman bracket skein modules, S(M,A), have been calculated for A=+1,-1, for all 3-manifolds M by relating them to the SL(2,C)-character varieties. We extend this description to the case when A is a 4-th root of 1 and M is either a…

Geometric Topology · Mathematics 2015-05-27 Adam S. Sikora

The Homflypt and Kauffman skein modules of the projective space are computed. Both are free and generated by some infinite set of links. This set may be chosen to be L_n, where L_n is an arbitrary link consisting of n projective lines for…

Geometric Topology · Mathematics 2007-05-23 Maciej Mroczkowski
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