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Related papers: Skein lasagna modules for 2-handlebodies

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The skein lasagna module is an extension of Khovanov-Rozansky homology to the setting of a four-manifold and a link in its boundary. This invariant plays the role of the Hilbert space of an associated fully extended (4+epsilon)-dimensional…

Geometric Topology · Mathematics 2023-04-26 Ciprian Manolescu , Kevin Walker , 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

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 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

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

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

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

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 interpret Manolescu-Neithalath's cabled Khovanov homology formula for computing Morrison-Walker-Wedrich's $\mathrm{KhR}_2$ skein lasagna module as a homotopy colimit (mapping telescope) in a completion of the category of complexes over…

Geometric Topology · Mathematics 2024-11-12 Ian A. Sullivan , Melissa Zhang

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 describe in this chapter (Chapter IX) the idea of building an algebraic topology based on knots (or more generally on the position of embedded objects). That is, our basic building blocks are considered up to ambient isotopy (not…

Geometric Topology · Mathematics 2007-05-23 Jozef H. Przytycki

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

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

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

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

For each skein module we describe a homology theory which, for any three manifold recovers the skein module at its zero level. The theory measures skein-like relations among skein relations, mimicking Hilbert's theory of syzygies. We work…

q-alg · Mathematics 2008-02-03 Doug Bullock , Charles Frohman , Joanna Kania-Bartoszynska

We study the concept of the fourth skein module of 3-manifolds, that is a skein module based on the skein relation b_0L_0 + b_1L_1 + b_2L_2 + b_3L_3 = 0 and a framing relation L^{(1)} = aL, where a, b_0, b_3 are invertible. We introdule the…

Geometric Topology · Mathematics 2007-05-23 Jozef H. Przytycki , Tatsuya Tsukamoto

In this paper we present recent results on the computation of skein modules of 3-manifolds using braids and appropriate knot algebras. Skein modules generalize knot polynomials in $S^3$ to knot polynomials in arbitrary 3-manifolds and they…

Geometric Topology · Mathematics 2023-11-14 Ioannis Diamantis

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

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
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