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We introduce the notion of a nested open book, a submanifold equipped with an open book structure compatible with an ambient open book, and describe in detail the special case of a push-off of the binding of an open book. This enables us to…

Geometric Topology · Mathematics 2019-11-04 Sebastian Durst , Mirko Klukas

We give explicit formulas and algorithms for the computation of the rotation number of a nullhomologous Legendrian knot on a page of a contact open book. On the way, we derive new formulas for the computation of the Thurston-Bennequin…

Geometric Topology · Mathematics 2026-02-10 Sebastian Durst , Marc Kegel

We introduce "book links" as a generalization of braids in open book decompositions; this new class of objects includes both braids and plats as special cases. We then prove a version of Markov's theorem in this general setting by extending…

Geometric Topology · Mathematics 2024-11-18 Roman Aranda , Fraser Binns , Margaret Doig

Giroux has described a correspondence between open book decompositions on a 3--manifold and contact structures. In this paper we use Heegaard Floer homology to give restrictions on contact structures which correspond to open book…

Symplectic Geometry · Mathematics 2007-05-23 Peter Ozsvath , Andras I. Stipsicz , Zoltan Szabo

In this paper we discuss the change in contact structures as their supporting open book decompositions have their binding components cabled. To facilitate this and applications we define the notion of a rational open book decomposition that…

Symplectic Geometry · Mathematics 2015-03-17 Kenneth L. Baker , John B. Etnyre , Jeremy Van Horn-Morris

In this note, we define a new invariant of a Legendrian knot in a contact manifold using an open book decomposition supporting the contact structure. We define the support genus sg(L) of a Legendrian knot L in a contact 3-manifold (M, \xi)…

Geometric Topology · Mathematics 2009-11-14 Sinem Celik Onaran

In this paper, we study a geometric/topological measure of knots and links called the nullification number. The nullification of knots/links is believed to be biologically relevant. For example, in DNA topology, one can intuitively regard…

Geometric Topology · Mathematics 2015-03-17 Yuanan Diao , Claus Ernst , Anthony Montemayor

We introduce the self-linking number of a smooth closed curve in R^n with respect to a 3-dimensional vector bundle over the curve, provided that some regularity conditions are satisfied. When n=3, this construction gives the classical…

Differential Geometry · Mathematics 2007-05-23 A. Montesinos-Amilibia , J. J. Nuno-Ballesteros

In the present paper we describe compatible open books for the fibre connected sum along binding components of open books, as well as for the fibre connected sum along multi-sections of open books. As an application the first description…

Geometric Topology · Mathematics 2016-07-20 Mirko Klukas

The algorithm given by Akbulut-Ozbagci constructs an explicit open book decomposition on a contact three-manifold described by a contact surgery on a link in the three-sphere. In this article, we will improve this algorithm by using…

Geometric Topology · Mathematics 2018-03-23 Mehmet Firat Arikan

The number $|K|$ of non-isotopic framed knots that correspond to a given unframed knot $K\subset S^3$ is infinite. This follows from the existence of the self-linking number $\slk$ of a zerohomologous framed knot. We use the approach of…

Geometric Topology · Mathematics 2007-05-23 Vladimir Chernov

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…

Geometric Topology · Mathematics 2007-05-23 Olga Plamenevskaya

We demonstrate how to combinatorially calculate the EH-class of a compatible contact structure in the sutured Floer homology group of a balanced sutured three manifold which is associated to an abstract partial open book decomposition. As…

Geometric Topology · Mathematics 2012-06-22 Tolga Etgü , Burak Ozbagci

We take advantage of the correspondence between fibered links, open book decompositions and contact structures on a closed connected 3-dimensional manifold to determine a mixed link diagram presentation for a particular fibered link $L$ in…

Geometric Topology · Mathematics 2015-02-12 Enrico Manfredi , Alessio Savini

For any irreducible representation of a surface group into $\mathrm{SL}_2(\mathbb{C})$, we show that there exists a pants decomposition where the restriction to any pair of pants is irreducible and where no curve of the decomposition is…

Geometric Topology · Mathematics 2022-10-19 Renaud Detcherry , Thomas Le Fils , Ramanujan Santharoubane

For any link in the 3-sphere, there is a natural lower bound for the unlinking number in terms of the classical signature. We prove that if this lower bound is sharp for a special alternating link $L$, then the unlinking number of $L$ is…

Geometric Topology · Mathematics 2026-03-25 Duncan McCoy , JungHwan Park

We study contact structures compatible with genus one open book decompositions with one boundary component. Any monodromy for such an open book can be written as a product of Dehn twists around dual non-separating curves in the…

Symplectic Geometry · Mathematics 2014-10-01 John A. Baldwin

The conventional topological description given by the fundamental group of nematic order parameter does not adequately explain the entangled defect line structures that have been observed in nematic colloids. We introduce a new topological…

Soft Condensed Matter · Physics 2011-05-09 Simon Čopar , Slobodan Žumer

We study four (a priori) different ways in which an open book decomposition of the 3-sphere can be defined to be braided. These include generalised exchangeability defined by Morton and Rampichini and mutual braiding defined by Rudolph,…

Geometric Topology · Mathematics 2023-04-18 Benjamin Bode

We use parameterized Morse theory on the pages of an open book decomposition to efficiently encode the contact topology in terms of a labelled graph on a disjoint union of tori (one per binding component). This construction allows us to…

Geometric Topology · Mathematics 2015-08-24 David T. Gay , Joan E. Licata