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Related papers: The universal sl_2 invariant and Milnor invariants

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We use the Mackaay-Vaz universal $sl(3)$-link homology to deepen the study of $s$-invariants on Khovanov's link homology associated to $sl(3)$. Such $s$-invariants have already been studied by Lobb and Wu in characteristic 0 and we show how…

Geometric Topology · Mathematics 2025-08-18 Dirk Schuetz

It has long been known that a Milnor invariant with no repeated index is an invariant of link homotopy. We show that Milnor's invariants with repeated indices are invariants not only of isotopy, but also of self C_k-moves. A self C_k-move…

Geometric Topology · Mathematics 2007-05-23 Thomas Fleming , Akira Yasuhara

We develop the theory of twisted L^2-cohomology and twisted spectral invariants for flat Hilbertian bundles over compact manifolds. They can be viewed as functions on the first de Rham cohomology of M and they generalize the standard…

dg-ga · Mathematics 2008-02-03 Varghese Mathai , Mikhail Shubin

The ropelength of a knot or link is the minimal number of inches of 1-inch-thick rope that it takes to tie it. The relationship of this measurement to knot and link invariants has been studied by various authors. We give the first results…

Geometric Topology · Mathematics 2025-09-04 Rafał Komendarczyk , Robin Koytcheff , Fedor Manin

We prove the existence of a degree 7 Vassiliev invariant of long (or string) two-component links which is not preserved under the simultaneous change of orientation of both components. The non-invertibility of this invariant can be detected…

Geometric Topology · Mathematics 2009-09-29 S. V. Duzhin , M. V. Karev

We derive an inductive, combinatorial definition of a polynomial-valued regular isotopy invariant of links and tangled graphs. We show that the invariant equals the Reshetikhin-Turaev invariant corresponding to the exceptional simple Lie…

Quantum Algebra · Mathematics 2016-09-06 Greg Kuperberg

We study the Goussarov-Habiro finite type invariants theory for framed string links in homology balls. Their degree 1 invariants are computed: they are given by Milnor's triple linking numbers, the mod 2 reduction of the Sato-Levine…

Geometric Topology · Mathematics 2010-02-09 Jean-Baptiste Meilhan

The link invariant, arising from the cyclic quantum dilogarithm via the particular $R$-matrix construction, is proved to coincide with the invariant of triangulated links in $S^3$ introduced in R.M. Kashaev, Mod. Phys. Lett. A, Vol.9 No.40…

q-alg · Mathematics 2009-10-28 R. M. Kashaev

In this paper we define the 1,2-coloured HOMFLY-PT link homology and prove that it is a link invariant. We conjecture that this homology categorifies the coloured HOMFLY-PT polynomial for links whose components are labelled 1 or 2.

Quantum Algebra · Mathematics 2008-09-02 Marco Mackaay , Marko Stosic , Pedro Vaz

The aim of this paper is to define two link invariants satisfying cubic skein relations. In the hierarchy of polynomial invariants determined by explicit skein relations they are the next level of complexity after Jones, HOMFLY, Kauffman…

Quantum Algebra · Mathematics 2007-05-23 Paolo Bellingeri , Louis Funar

In this paper, we study the asymptotics of the colored Jones polynomials of the Whitehead chains with one belt colored by $M_1$ and all the clasps colored by $M_2$ evaluated at the $(N+1/2)$-th root of unity $t=e^{\frac{2\pi i}{N+1/2}}$,…

Geometric Topology · Mathematics 2020-05-26 Ka Ho Wong

In this paper, we give a complete set of finite type string link invariants of degree <5. In addition to Milnor invariants, these include several string link invariants constructed by evaluating knot invariants on certain closure of…

Geometric Topology · Mathematics 2015-05-13 Jean-Baptiste Meilhan , Akira Yasuhara

Cut-diagrams are diagrammatic objects, defined in dimensions 1 and 2, that generalize links in 3-space and surface-links in 4-space; in dimension 1, this coincides with the theory of welded links. Using cut-diagrams, we introduce an…

Geometric Topology · Mathematics 2026-03-30 Benjamin Audoux , Jean-Baptiste Meilhan , Akira Yasuhara

Milnor's invariants are some of the more fundamental oriented link concordance invariants; they behave as higher order linking numbers and can be computed using combinatorial group theory (due to Milnor), Massey products (due to Turaev and…

Geometric Topology · Mathematics 2024-10-23 Miriam Kuzbary

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

In the 1950's Milnor defined a family of higher order invariants generalizing the linking number. Even the first of these new invariants, the triple linking number, has received and fruitful study since its inception. In the case that $L$…

Geometric Topology · Mathematics 2019-01-17 Jonah Amundsen , Eric Anderson , Christopher W. Davis

The paper concerns the tree invariants of string links, introduced by Kravchenko and Polyak and closely related to the classical Milnor linking numbers also known as $\bar{\mu}$--invariants. We prove that, analogously as for…

Geometric Topology · Mathematics 2019-07-08 R. Komendarczyk , A. Michaelides

We define and study the properties of observables associated to any link in $\Sigma\times {\bf R}$ (where $\Sigma$ is a compact surface) using the combinatorial quantization of hamiltonian Chern-Simons theory. These observables are traces…

q-alg · Mathematics 2009-10-28 E. Buffenoir , Ph. Roche

Knots and links in 3-manifolds are studied by applying intersection invariants to singular concordances. The resulting link invariants generalize the Arf invariant, the mod 2 Sato-Levine invariants, and Milnor's triple linking numbers.…

Geometric Topology · Mathematics 2016-01-20 Rob Schneiderman

Based on the analogies between knot theory and number theory, we study a deformation theory for SL_2-representations of knot groups, following after Mazur's deformation theory of Galois representations. Firstly, by employing the…

Geometric Topology · Mathematics 2020-05-11 Masanori Morishita , Yu Takakura , Yuji Terashima , Jun Ueki
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