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arXiv research

A locally-built, LLM-digested index of recent arXiv papers in quant finance, geometry/topology, and statistical ML — keyword search served straight from SQLite on this machine.

169,291 papers · 148 categories

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9192837 · Jun 202019922001200920182026
48 results for cosmetic contact surgeries

Study extends contact cosmetic surgeries to non-trivial Legendrian knots in L-spaces.

problem Contact cosmetic surgeries for Legendrian knots in L-spaces.
method Adapting techniques from S3 to L-spaces, incorporating Heegaard Floer theory constraints.
result Contact cosmetic surgery conjecture holds for non-trivial Legendrian knots, except for Lagrangian slice knots.

Study finds chirally cosmetic surgeries on knots and manifolds, contradicting previous conjectures.

problem Disprove conjectures about chirally cosmetic surgeries and purely cosmetic surgeries.
method Construct infinite families of chirally cosmetic surgeries and purely cosmetic surgeries on specific geometric objects.
result Found chirally cosmetic surgeries and purely cosmetic surgeries that contradict previous conjectures.

This paper concerns the truly or purely cosmetic surgery conjecture. We give a survey on exceptional surgeries and cosmetic surgeries. We prove that the slope of an exceptional truly cosmetic surgery on a hyperbolic knot in S3S^3 must be ±1\pm 1 and the surgery must be toroidal but not Seifert fibred. As consequence we…

2015-05-01abs ↗pdf ↗

The cosmetic surgery conjecture is a longstanding conjecture in 3-manifold theory. We present a theorem about exceptional cosmetic surgery for homology spheres. Along the way we prove that if the surgery is not a small seifert Z/2Z\mathbb{Z}/2\mathbb{Z}-homology sphere or a toroidal irreducible non-Seifert surgery then t…

2016-05-15abs ↗pdf ↗

Study cosmetic surgeries on knots in homology spheres using Casson-Walker invariant.

problem Cosmetic surgeries on knots in homology spheres and their constraints.
method Rational surgery formula of the Casson-Walker invariant for 2-component links.
result Constraints on knots and surgery slopes for cosmetic surgeries.

Study shows most odd pretzel knots don't allow chirally cosmetic surgeries.

problem Characterizing chirally cosmetic surgeries on specific knot types.
method Recent methods of Ichihara, Ito, and Saito applied to genus 2 and 3 alternating odd pretzel knots.
result Most genus 2 and 3 alternating odd pretzel knots do not admit chirally cosmetic surgeries.

The study proves large alternating Montesinos knots cannot have purely cosmetic surgeries.

problem Proving non-existence of purely cosmetic surgeries for certain types of knots.
method Analyzing specific knot types with reduced diagrams and twist numbers, and using properties of Dehn surgeries.
result Large alternating Montesinos knots do not admit purely cosmetic surgeries.

Two Dehn surgeries on a knot are called cosmetic if they yield homeomorphic manifolds. For a null-homologous knot with certain conditions on the Thurston norm of the ambient manifold, if the knot admits cosmetic surgeries, then the surgery coefficients are equal up to sign.

2010-01-22abs ↗pdf ↗

In this paper, we prove that there are no truly cosmetic surgeries on genus one classical knots. If the two surgery slopes have the same sign, we give the only possibilities of reflectively cosmetic surgeries. The result is an application of Heegaard Floer theory and number theory.

2005-12-13abs ↗pdf ↗

Paper proves knots satisfy a conjecture using Jones polynomial.

problem Proving infinite families of knots satisfy the Cosmetic Surgery Conjecture.
method Computed Jones polynomial and invariants for two knot families.
result Two infinite families of knots satisfy the Purely Cosmetic Surgery Conjecture.

The study confirms that most positive 2-bridge knots up to 31 crossings do not have chirally cosmetic surgeries.

problem Determining which positive 2-bridge knots up to 31 crossings have chirally cosmetic surgeries.
method Using the obstruction formula from arXiv:2112.03144 and a Python program to compute classical knot invariants.
result Positive 2-bridge knots up to 31 crossings, except (2,2n+1)(2, 2n+1) torus knots, do not admit chirally cosmetic surgeries.

Two Dehn surgeries on a knot are called {\it purely cosmetic}, if they yield manifolds that are homeomorphic as oriented manifolds. Suppose there exist purely cosmetic surgeries on a knot in S3S^3, we show that the two surgery slopes must be the opposite of each other. One ingredient of our proof is a Dehn surgery form…

2010-09-23abs ↗pdf ↗

Study shows most knots up to 10 crossings can't be chirally cosmetic.

problem Identifying knots that can undergo chirally cosmetic surgeries.
method Used invariants from 3-manifold theory, including quantum SO(3)-invariant and Heegaard Floer homology.
result Approximately 75% of knots up to 10 crossings do not admit chirally cosmetic surgeries.

The study limits the number of cosmetic surgeries for certain knots in specific 3-manifolds.

problem Limits the number of cosmetic surgeries for knots in specific 3-manifolds.
method Rational surgery formula for Casson--Walker--Lescop invariant, constraints for null-homologous knots.
result At most two pairs of integral purely cosmetic surgeries for null-homologous knots in rational homology spheres.

The paper generalizes a surgery conjecture and proves it under the Zilber-Pink conjecture.

problem Generalizing the Cosmetic Surgery Conjecture to nn-cusped hyperbolic 3-manifolds.
method Proves the generalized conjecture under the assumption of the Zilber-Pink conjecture, and without assuming it for n=1n=1 and 22.
result Proves the generalized Cosmetic Surgery Conjecture for n=1n=1 and 22 without assuming the Zilber-Pink conjecture.

Special knots with many twists have no certain type of surgery.

problem Proving certain knots have no chirally cosmetic surgeries.
method Analyzing the number of twist regions and using invariants to bound surgeries.
result Special alternating knots with more than 63 twist regions have no chirally cosmetic surgeries.

We consider the cosmetic surgery problem for two-bridge knots in the 3-sphere. It is seen that all the two-bridge knots at most 9 crossings other than 927=S(49,19)=C[2,2,2,2,2,2]9_{27} = S(49,19)=C[2,2,-2,2,2,-2] admits no purely cosmetic surgery pairs. Then we show that any two-bridge knot of the Conway form [2x,2,2x,2x,2,2x][2x,2,-2x,2x,2,-2x] with $x \ge …

2016-02-07abs ↗pdf ↗

By considering non-orientable surfaces in the surgered manifolds, we show that the 10/3- and -10/3-Dehn surgeries on the 2-bridge knot 927=S(49,19)9_{27} = S(49,19) are not cosmetic, i.e., they give mutually non-homeomorphic manifolds. The knot is unknown to have no cosmetic surgeries by previously known results; in particular, …

2012-09-01abs ↗pdf ↗

We show that two Dehn surgeries on a knot KK never yield manifolds that are homeomorphic as oriented manifolds if VK(1)0V_K''(1)\neq 0 or VK(1)0V_K'''(1)\neq 0. As an application, we verify the cosmetic surgery conjecture for all knots with no more than 1111 crossings except for three 1010-crossing knots and five 1111-crossin…

2016-06-10abs ↗pdf ↗

Two-bridge knots can't be transformed into each other by certain surgeries.

problem Understanding transformations of 3-manifolds via knot surgeries.
method Used signature, finite type invariants for knots and SL(2,C)SL(2,\mathbb{C}) Casson invariant for 3-manifolds.
result Two-bridge knots and alternating fibered knots admit no purely cosmetic surgeries.

The paper examines cosmetic two-strand twists on fibered knots and their properties.

problem When does a two-strand twist of a fibered knot produce an isotopic knot?
method Generalized crossing changes and non-coherent band surgeries were defined and analyzed.
result Fibered knots in rational homology spheres admit no cosmetic generalized crossing changes.

Update: The Cosmetic Surgery Conjecture modulo finitely many Dehn-filling coefficients has been a well-known classical result, so the first main result of this paper is not new. (But the author was initially unaware of this fact, and the tools and techniques used here are very different from all the classically known m…

2016-05-08abs ↗pdf ↗

We present various examples of cosmetic bandings on knots and links, that is, bandings on knots and links leaving their types unchanged. As a byproduct, we give a hyperbolic knot which admits exotic chirally cosmetic surgeries yielding hyperbolic manifolds. This gives a counterexample to a conjecture raised by Bleiler,…

2016-02-04abs ↗pdf ↗