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We prove that if two knots are concordant, their involutive knot Floer complexes satisfy a certain type of stable equivalence.

几何拓扑 · 数学 2017-08-23 Kristen Hendricks , Jennifer Hom

This note corrects the mistakes in the splicing formulas of the paper "Floer homology and splicing knot complements". The mistakes are the result of the incorrect assumption that for a knot $K$ inside a homology sphere $Y$, the involution…

几何拓扑 · 数学 2020-12-16 Eaman Eftekhary

We derive symmetries and adjunction inequalities of the knot Floer homology groups which appear to be especially interesting for homologically essential knots. Furthermore, we obtain an adjunction inequality for cobordism maps in knot Floer…

几何拓扑 · 数学 2012-09-06 Bijan Sahamie

Similar to knots in S^3, any knot in a lens space has a grid diagram from which one can combinatorially compute all of its knot Floer homology invariants. We give an explicit description of the generators, differentials, and rational Maslov…

几何拓扑 · 数学 2008-08-05 Kenneth L. Baker , J. Elisenda Grigsby , Matthew Hedden

Knot Floer homology is an invariant for knots discovered by the authors and, independently, Jacob Rasmussen. The discovery of this invariant grew naturally out of studying how a certain three-manifold invariant, Heegaard Floer homology,…

几何拓扑 · 数学 2017-06-26 Peter Ozsvath , Zoltan Szabo

Conjecturally, a knot in the 3-sphere has only finitely many non-integer non-characterizing slopes. We verify this conjecture for all knots with knot Floer homology satisfying certain simplicity conditions. The class of knots satisfying our…

几何拓扑 · 数学 2025-02-11 Duncan McCoy

Real Heegaard Floer homology is an invariant associated to a three-manifold equipped with an involution with nonempty fixed set of codimension two. We show that when the image of the fixed point set is nullhomologous in the quotient, the…

几何拓扑 · 数学 2026-04-20 Eha Srivastava

We show a connection between a surgery exact sequence in knot Floer homology and the sequence derived in [18]. As a consequence of this relationship we see that the exact sequence in [18] also works with coherent orientations and admits…

几何拓扑 · 数学 2011-02-22 Bijan Sahamie

We prove that the knot Floer complex of a fibered knot detects whether the monodromy of its fibration is right-veering. In particular, this leads to a purely knot Floer-theoretic characterization of tight contact structures, by the work of…

几何拓扑 · 数学 2025-01-07 John A. Baldwin , Yi Ni , Steven Sivek

We show that link Floer homology detects the Thurston norm of a link complement. As an application, we show that the Thurston polytope of an alternating link is dual to the Newton polytope of its multi-variable Alexander polynomial. To…

几何拓扑 · 数学 2007-12-11 Peter Ozsvath , Zoltan Szabo

We define an invariant of transverse links in the standard contact 3-sphere as a distinguished element of the Khovanov homology of the link. The quantum grading of this invariant is the self-linking number of the link. For knots, this gives…

几何拓扑 · 数学 2007-05-23 Olga Plamenevskaya

The (untwisted) oriented cube of resolutions for knot Floer homology assigns a complex $C_{F}(S)$ to a singular resolution $S$ of a knot $K$. Manolescu conjectured that when $S$ is in braid position, the homology $H_{*}(C_{F}(S))$ is…

几何拓扑 · 数学 2018-12-19 Nathan Dowlin

Let $K$ denote a knot inside the homology sphere $Y$. The zero-framed longitude of $K$ gives the complement of $K$ in $Y$ the structure of a bordered three-manifold, which may be denoted by $Y(K)$. We compute the quasi-isomorphism type of…

几何拓扑 · 数学 2019-02-20 Eaman Eftekhary

We obtain a formula for the Heegaard Floer homology (hat theory) of the three-manifold $Y(K_1,K_2)$ obtained by splicing the complements of the knots $K_i\subset Y_i$, $i=1,2$, in terms of the knot Floer homology of $K_1$ and $K_2$. We also…

几何拓扑 · 数学 2016-01-27 Eaman Eftekhary

Using the combinatorial approach to knot Floer homology, we define an invariant for Legendrian knots in the three-sphere, which takes values in link Floer homology. This invariant can be used to also construct an invariant of transverse…

几何拓扑 · 数学 2014-11-11 Peter Ozsvath , Zoltan Szabo , Dylan Thurston

We define Floer homology theories for oriented, singular knots in S^3 and show that one of these theories can be defined combinatorially for planar singular knots.

几何拓扑 · 数学 2014-02-26 Peter Ozsvath , Andras I. Stipsicz , Zoltan Szabo

In this paper, we introduce a sequence of invariants of a knot K in S^3: the knot Floer homology groups of the preimage of K in the m-fold cyclic branched cover over K. We exhibit the knot Floer homology in the m-fold branched cover as the…

几何拓扑 · 数学 2009-04-23 J Elisenda Grigsby

In an earlier work, we introduced a family of t-modified knot Floer homologies, defined by modifying the construction of knot Floer homology HFK-minus. The resulting groups were then used to define concordance homomorphisms indexed by t in…

几何拓扑 · 数学 2015-08-14 Peter Ozsvath , Andras Stipsicz , Zoltan Szabo

We show that the integer homology sphere obtained by splicing two nontrivial knot complements in integer homology sphere L-spaces has Heegaard Floer homology rank strictly greater than one. In particular, splicing the complements of…

几何拓扑 · 数学 2015-09-11 Matthew Hedden , Adam Simon Levine

By studying the Heegaard Floer homology of the preimage of a knot K in S^3 inside its double branched cover, we develop simple obstructions to K having finite order in the classical smooth concordance group. As an application, we prove that…

几何拓扑 · 数学 2014-11-11 J. Elisenda Grigsby , Daniel Ruberman , Saso Strle