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121243364485 · May 202619922001200920172026
48 results for Kirby structures

We define the notion of a Kirby element of a ribbon category C (not necessarily semisimple). Kirby elements lead to 3-manifolds invariants. We characterize (in terms of the structure maps of some categorical Hopf algebra) a set of Kirby elements of C which is sufficiently large to recover the known quantum invariants c…

2003-12-17abs ↗pdf ↗

The paper sets lower bounds for a Kirby-Thompson invariant of 4-manifolds.

problem Determining the Kirby-Thompson invariant of specific 4-manifolds.
method Using trisections, the paper establishes lower bounds and calculates the invariant for specific examples.
result The paper calculates the Kirby-Thompson invariant of the spin of L(2,1)L(2,1) and shows the existence of 4-manifolds with arbitrarily large invariants.

Survey of LMO invariant for 3-manifolds using Kirby structures.

problem Developing a combinatorial approach to the LMO invariant of 3-manifolds.
method Introducing Kirby structures and pre-LMO structures to yield multiplicative invariants.
result Construction and equivalence of two families of invariants, leading to the LMO invariant.

This is an expository paper giving a proof of the existence and uniqueness of smooth structures (hence also PL structures) on topological surfaces. Most published proofs rely on the topological Schoenflies theorem, but here we use instead the Kirby torus trick. This has the advantage of reducing the point-set topology …

2013-12-12abs ↗pdf ↗

Simply-connected 4-manifolds are covered by products with a 2-torus.

problem Proving that any closed simply-connected smooth 4-manifold is branched covered by a product of an orientable surface and a 2-torus.
method Natural construction with respect to spin structures, solving Problem 4.113(C) in Kirby's list.
result Closed simply-connected smooth 4-manifolds are 16-fold branched covered by a product of an orientable surface and a 2-torus.

The paper describes handle decompositions and Kirby diagrams for plane algebraic curves.

problem Understanding the topology of the complement of plane algebraic curves.
method Using braid monodromy to refine handle decompositions and Kirby diagrams.
result Explicit handle decompositions and Kirby diagrams for plane algebraic curves are provided.

Note on potential Kirby move type 1 for contact surgery diagrams.

problem Exploring conditions for a contact Kirby move type 1.
method Analyzing necessary conditions for contact surgery diagrams to be candidates for contact Kirby move type 1.
result Existence of a collection of contact positive integral surgery diagrams on Legendrian unknots satisfying the conditions.

New examples of Kirby-Ramanujam spheres found, leading to contractible 4-manifolds.

problem Finding new examples of Kirby-Ramanujam spheres.
method Tracing the initial steps of Kirby's example and providing additional examples, showing diffeomorphisms and linear independence.
result Found three infinite families of Kirby-Ramanujam spheres that bound contractible 4-manifolds.

The study describes handle decompositions and Kirby diagrams for line arrangements.

problem Understanding handle decompositions and Kirby diagrams for line arrangements.
method Introduced the divide with cusps and used Lefschetz hyperplane section theorem.
result Described the Kirby diagram for line arrangements.

Kirby diagrams for exotic R^4's constructed from specific knot complements.

problem Identifying and visualizing exotic R4\mathbb{R}^4's using Kirby diagrams.
method Provided Kirby diagrams for a family of exotic R4\mathbb{R}^4's constructed from specific knot complements.
result Generalized Kirby diagrams for a broader family of exotic R4\mathbb{R}^4's.

A theorem of Kirby gives a necessary and sufficient condition for two framed links in S^3 to yield orientation-preserving diffeomorphic results of surgery. Kirby's theorem is an important method for constructing invariants of 3-manifolds. In this paper, we prove a variant of Kirby's theorem for null-homologous framed l…

2014-04-01abs ↗pdf ↗

The paper connects Kirby diagrams and 5-colored graphs to represent 4-manifolds.

problem Representing compact 4-manifolds using Kirby diagrams and graphs.
method Algorithmically constructing 5-colored graphs from Kirby diagrams to represent PL 4-manifolds.
result Upper bounds for gem-complexity and regular genus derived from Kirby diagrams.

New contact Kirby moves complete the set for contact surgery diagrams.

problem Contact surgery diagrams and their relation to contactomorphic contact manifolds.
method Introducing lantern moves and chain moves to complete the set of contact Kirby moves.
result Two contact surgery diagrams represent contactomorphic contact manifolds if and only if they are related by a sequence of specific moves.

Generalizes Rochlin's theorem to 4-manifolds with boundary and arbitrary 3-manifold boundaries.

problem Proving divisibility of self-intersection numbers in 4-manifolds with boundary.
method Combining Kirby-Siebenmann invariants, Brown invariants, and pin structures.
result Combinatorial description of Kirby-Siebenmann invariant for 4-manifolds with boundary.

Harer, Kas and Kirby have conjectured that every handle decomposition of the elliptic surface E(1)2,3E(1)_{2,3} requires both 1- and 3-handles. In this article, we construct a smooth 4-manifold which has the same Seiberg-Witten invariant as E(1)2,3E(1)_{2,3} and admits neither 1- nor 3-handles, by using rational blow-downs and K…

2007-05-08abs ↗pdf ↗

A theorem of Kirby states that two framed links in the 3-sphere produce orientation-preserving homeomorphic results of surgery if they are related by a sequence of stabilization and handle-slide moves. The purpose of the present paper is twofold: First, we give a sufficient condition for a sequence of handle-slides on …

2005-09-02abs ↗pdf ↗

Suppose there are two framed links in a compact, connected 3-manifold (possibly with boundary, or non-orientable) such that the associated 3-manifolds obtained by surgery are homeomorphic (relative to their common boundary, if there is one.) How are the links related? Kirby's theorem gives the answer when the manifold …

1998-12-15abs ↗pdf ↗

Software simplifies triangulations of 4-manifolds, revealing exotic structures.

problem Understanding smooth 4-manifolds from discrete and algorithmic perspectives.
method New software tools, including an algorithm for triangulations from Kirby diagrams and a heuristic for simplification.
result Presented new triangulations of exotic pairs, corks, and plugs, including the smallest known K3 surface.

Connected sums defined for codimension two locally flat submanifolds in higher dimensions.

problem Defining connected sums for codimension two locally flat submanifolds in various dimensions.
method Using results from higher dimensional topological manifolds and four-manifolds, defining connected sums for codimension two locally flat submanifolds.
result A well-defined connected sum exists up to orientation preserving homeomorphism.

We give a construction of Kirby weight systems associated to sl(2) and valued into the finite field Z/pZ. We show that it is possible to apply this sequence of weight systems on the universal invariant of framed link. We also show that the corresponding sequence admits a Fermat limit, which defines an asymptotic ration…

1998-02-15abs ↗pdf ↗

One can define the complexity of a smooth 4-manifold as the minimal sum of the number of disks, strands and crossings in a Kirby diagram. Martelli proved that the number of homeomorphism classes of complexity less than n grows as n2n^2. In this paper we prove that the number of diffeomorphism classes grows at least as …

2007-01-09abs ↗pdf ↗

New invariant defined for Weinstein domains, related to Kirby-Thompson's invariant.

problem Defining a symplectic invariant for Weinstein domains.
method Contact cut graph, Lefschetz fibrations, multisections with divides.
result Definition of Weinstein L\mathcal{L}-invariant and its relation to Kirby-Thompson's invariant.