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Viewing the BRAID invariant as a generator of link Floer homology we generalise work of Baldwin-Vela-Vick to obtain rank bounds on the next to top grading of knot Floer homology. These allow us to classify links with knot Floer homology of…

Geometric Topology · Mathematics 2023-12-12 Fraser Binns , Subhankar Dey

We introduce explicit holonomy perturbations of the Chern-Simons functional on a 3-ball containing a pair of unknotted arcs. These perturbations give us a concrete local method for making the moduli spaces of flat singular SO(3) connections…

Geometric Topology · Mathematics 2014-11-11 Matthew Hedden , Chris Herald , Paul Kirk

We give a recipe for constructing families of distinct knots that have identical Khovanov homology and give examples of pairs of prime knots, as well as infinite families, with this property.

Geometric Topology · Mathematics 2014-10-01 Liam Watson

Using the theory of perverse sheaves of vanishing cycles, we define a homological invariant of knots in three-manifolds, similar to the three-manifold invariant constructed by Abouzaid and the second author. We use spaces of SL(2,C) flat…

Geometric Topology · Mathematics 2019-06-19 Laurent Côté , Ciprian Manolescu

We use the Ozsvath-Szabo theory of Floer homology to define an invariant of knot complements in three-manifolds. This invariant takes the form of a filtered chain complex, which we call CF_r. It carries information about the Floer homology…

Geometric Topology · Mathematics 2007-05-23 Jacob Rasmussen

We define a homological action on sutured instanton Floer homology. This action is well-defined up to scalars, and behaves well under connected sums and sutured manifold decompositions. As an application, we show that instanton knot…

Geometric Topology · Mathematics 2023-07-03 Hongjian Yang

We consider complements of standard Seifert surfaces of special alternating links. On these handlebodies, we use Honda's method to enumerate those tight contact structures whose dividing sets are isotopic to the link, and find their number…

Geometric Topology · Mathematics 2020-03-25 Tamás Kálmán , Daniel V. Mathews

Kronheimer and Mrowka defined invariants of balanced sutured manifolds using monopole and instanton Floer homology. Their invariants assign isomorphism classes of modules to balanced sutured manifolds. In this paper, we introduce…

Geometric Topology · Mathematics 2017-08-03 John A. Baldwin , Steven Sivek

We define a link homology theory that is readily seen to be both isomorphic to reduced odd Khovanov homology and fully determined by data impervious to Conway mutation. This gives an elementary proof that odd Khovanov homology is mutation…

Geometric Topology · Mathematics 2009-03-27 Jonathan Bloom

We prove that, like the Seiberg-Witten monopole homology, the Heegaard Floer homology for a three-manifold determines its Thurston norm. As a consequence, we show that knot Floer homology detects the genus of a knot. This leads to new…

Geometric Topology · Mathematics 2014-11-11 Peter Ozsvath , Zoltan Szabo

We investigate properties of the odd Khovanov homology, compare and contrast them with those of the original (even) Khovanov homology, and discuss applications of the odd Khovanov homology to other areas of knot theory and low-dimensional…

Geometric Topology · Mathematics 2018-06-20 Alexander N. Shumakovitch

We prove that the Khovanov homology of the 2-cable detects the unknot. A corollary is that Khovanov's categorification of the 2-colored Jones polynomial detects the unknot.

Geometric Topology · Mathematics 2008-05-30 Matthew Hedden

Using the grid diagram formulation of knot Floer homology, Ozsvath, Szabo and Thurston defined an invariant of transverse knots in the tight contact 3-sphere. Shortly afterwards, Lisca, Ozsvath, Stipsicz and Szabo defined an invariant of…

Symplectic Geometry · Mathematics 2014-11-11 John A. Baldwin , David Shea Vela-Vick , Vera Vertesi

A discussion given to the question of extending Khovanov homology from links to embedded graphs, by using the Kauffman topological invariant of embedded graphs by associating family of links and knots to a such graph by using some local…

Algebraic Topology · Mathematics 2013-08-13 Ahmad Zainy Al-Yasry

For a given smooth $2$-knot in $S^4$, we relate the existence of a smooth Seifert hypersurface of a certain class to the existence of irreducible $ SU(2)$-representations of its knot group. For example, we see that any smooth $2$-knot…

Geometric Topology · Mathematics 2022-01-28 Masaki Taniguchi

Li-Xie-Zhang classified instanton Floer minimal knots in balanced sutured manifolds subject to a condition on the fundamental group. In this paper, we give a similar classification in the Heegaard Floer homology setting. Since our…

Geometric Topology · Mathematics 2025-05-27 Fraser Binns

Let $\Delta$ be a trivial knot in the three-sphere. For every finite cyclic group $G$ of odd order, we construct a $G$-equivariant Khovanov homology with coefficients in the filed $\F_{2}$. This homology is an invariant of links up to…

Geometric Topology · Mathematics 2007-05-23 Nafaa Chbili

We determine the structure of the Khovanov homology groups in homological grading 1 of positive links. More concretely, we show that the first Khovanov homology is supported in a single quantum grading determined by the Seifert genus of the…

Geometric Topology · Mathematics 2023-04-27 Marc Kegel , Naageswaran Manikandan , Leo Mousseau , Marithania Silvero

We propose a framework for unifying the sl(N) Khovanov-Rozansky homology (for all N) with the knot Floer homology. We argue that this unification should be accomplished by a triply graded homology theory which categorifies the HOMFLY…

Geometric Topology · Mathematics 2007-11-06 Nathan M. Dunfield , Sergei Gukov , Jacob Rasmussen

A well-known conjecture states that for any $l$-component link $L$ in $S^3$, the rank of the knot Floer homology of $L$ (over any field) is less than or equal to $2^{l-1}$ times the rank of the reduced Khovanov homology of $L$. In this…

Geometric Topology · Mathematics 2021-07-22 John A. Baldwin , Adam Simon Levine , Sucharit Sarkar
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