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Related papers: Almost-extreme Khovanov spectra

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The Lipshitz-Sarkar stable homotopy link invariant defines Steenrod squares on the Khovanov cohomology of a link. Lipshitz-Sarkar constructed an algorithm for computing the first two Steenrod squares. We develop a new algorithm which…

Geometric Topology · Mathematics 2017-10-06 Andrew Lobb , Patrick Orson , Dirk Schuetz

We categorify a coideal subalgebra of the quantum group of $\mathfrak{sl}_{2r+1}$ by introducing a $2$-category \`a la Khovanov-Lauda-Rouquier, and show that self-dual indecomposable $1$-morphisms categorify the canonical basis of this…

Representation Theory · Mathematics 2022-11-18 Huanchen Bao , Peng Shan , Weiqiang Wang , Ben Webster

This paper is devoted to the study of algebraic structures leading to link homology theories. The originally used structures of Frobenius algebra and/or TQFT are modified in two directions. First, we refine 2-dimensional cobordisms by…

Geometric Topology · Mathematics 2009-10-28 Anna Beliakova , Emmanuel Wagner

In this paper we prove that every Khovanov homology associated to a Frobenius algebra of rank $2$ can be modified in such a way as to produce a TQFT on oriented links, that is a monoidal functor from the category of cobordisms of oriented…

Algebraic Topology · Mathematics 2015-08-19 Pierre Vogel

We define a category of planar diagrams whose Grothendieck group contains an integral version of the infinite rank Heisenberg algebra, thus yielding a categorification of this algebra. Our category, which is a q-deformation of one defined…

Representation Theory · Mathematics 2014-10-24 Anthony Licata , Alistair Savage

The concept of adequate links, introduced by Lickorish and Thistlethwaite as a generalization of alternating links, has recently gained interest among knot theorists in the context of Khovanov homology. Przytycki and Silvero introduced the…

Geometric Topology · Mathematics 2025-02-26 Lizzie Buchanan , Huizheng Guo , Gabriel Montoya-Vega , Yongwu Rong , Marithania Silvero

Let L be a null homologous link in $\mathbb{RP}^3$. We define Khovanov-type homologies of L which depend on an extra input $\alpha = (V_0,V_1,f,g)$ consisting of two graded vectors spaces and two maps between them. With some specific choice…

Geometric Topology · Mathematics 2021-04-13 Daren Chen

Using methods developed by Franke, we obtain algebraic classification results for modules over certain symmetric ring spectra ($S$-algebras). In particular, for any symmetric ring spectrum $R$ whose graded homotopy ring $\pi_*R$ has graded…

Algebraic Topology · Mathematics 2014-10-01 Irakli Patchkoria

We decompose the K-theory space of a Waldhausen category in terms of its Dwyer-Kan simplicial localization. This leads to a criterion for functors to induce equivalences of K-theory spectra that generalizes and explains many of the criteria…

K-Theory and Homology · Mathematics 2011-08-09 Andrew J. Blumberg , Michael A. Mandell

We study homotopy theory of the category of spectral sequences with respect to the class of weak equivalences given by maps which are quasi-isomorphisms on a fixed page. We introduce the category of extended spectral sequences and show that…

Algebraic Topology · Mathematics 2026-03-25 Muriel Livernet , Sarah Whitehouse

In previous works, the second author defined directional Robin constants associated to a compact, nonpolar subset $K$ of an algebraic curve $A$ in $\mathbb{C}^N$ and related these to a natural class of Chebyshev constants for $K$. We define…

Complex Variables · Mathematics 2026-01-21 Norm Levenberg , Sione Ma'u

Let G denote a complex, semisimple, simply-connected group. We identify the equivariant quantum differential equation for the cotangent bundle to the flag variety of G with the affine Knizhnik-Zamolodchikov connection of Cherednik and…

Algebraic Geometry · Mathematics 2010-09-07 Alexander Braverman , Davesh Maulik , Andrei Okounkov

For a non-vanishing group, we show that the evaluation functor induces an equivalence between the category of modules over the double Burnside algebra and a certain category of biset functors. Using this equivalence, we deduce that over a…

Representation Theory · Mathematics 2018-07-24 Baptiste Rognerud

The Temperley-Lieb algebra is a fundamental component of SU(2) topological quantum field theories. We construct chain complexes corresponding to minimal idempotents in the Temperley-Lieb algebra. Our results apply to the framework which…

Quantum Algebra · Mathematics 2015-11-25 Benjamin Cooper , Matt Hogancamp

We compute the spectrum of the category of derived Mackey functors (in the sense of Kaledin) for all finite groups. We find that this space captures precisely the top and bottom layers (i.e. the height infinity and height zero parts) of the…

Algebraic Topology · Mathematics 2022-10-20 Irakli Patchkoria , Beren Sanders , Christian Wimmer

We categorify the extended affine Hecke algebra and the affine quantum Schur algebra S(n,r) for 2 < r < n, using Elias-Khovanov and Khovanov-Lauda type diagrams. We also define the affine analogue of the Elias-Khovanov and the…

Quantum Algebra · Mathematics 2014-01-31 Marco Mackaay , Anne-Laure Thiel

We show that the infinitesimal generator of the symmetric simple exclusion process, recast as a quantum spin-1/2 ferromagnetic Heisenberg model, can be solved by elementary techniques on the complete, complete bipartite, and related…

Statistical Mechanics · Physics 2013-07-01 J. Ricardo G. Mendonça

Let G be a finite group. We systematically exploit general homological methods in order to reduce the computation of G-equivariant KK-theory to topological equivariant K-theory. The key observation is that the functor assigning to a…

Operator Algebras · Mathematics 2016-05-11 Ivo Dell'Ambrogio

We initiate the theory of graded commutative 2-rings, a categorification of graded commutative rings. The goal is to provide a systematic generalization of Paul Balmer's comparison maps between the spectrum of tensor-triangulated categories…

Category Theory · Mathematics 2016-05-11 Ivo Dell'Ambrogio , Greg Stevenson

We describe a deformation of the $\infty$-category of Borel $G$-spectra for a finite group $G$. This provides a new presentation of the $a$-complete real Artin--Tate motivic stable homotopy category when $G=C_2$ and gives a new…

Algebraic Topology · Mathematics 2025-11-18 Gabriel Angelini-Knoll , Mark Behrens , Eva Belmont , Hana Jia Kong