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It is well known that any set of n intervals in $\mathbb{R}^1$ admits a non-monochromatic coloring with two colors and a conflict-free coloring with three colors. We investigate generalizations of this result to colorings of objects in more…

Discrete Mathematics · Computer Science 2018-05-08 Boris Aronov , Mark de Berg , Aleksandar Markovic , Gerhard Woeginger

We obtain the following new coloring results: * A 3-colorable graph on $n$ vertices with maximum degree~$\Delta$ can be colored, in polynomial time, using $O((\Delta \log\Delta)^{1/3} \cdot\log{n})$ colors. This slightly improves an…

Data Structures and Algorithms · Computer Science 2016-08-31 Eran Halperin , Ram Nathaniel , Uri Zwick

We point out that the strong slope conjecture implies that the degrees of the colored Jones knot polynomials detect the figure eight knot. Furthermore, we propose a characterization of alternating knots in terms of the Jones period and the…

Geometric Topology · Mathematics 2020-10-15 Efstratia Kalfagianni

We present a set of 26 finite quandles that distinguish (up to reversal and mirror image) by number of colorings, all of the 2977 prime oriented knots with up to 12 crossings. We also show that 1058 of these knots can be distinguished from…

Geometric Topology · Mathematics 2016-11-15 W. Edwin Clark , Mohamed Elhamdadi , Masahico Saito , Timothy Yeatman

Colored triangulations offer a generalization of combinatorial maps to higher dimensions. Just like maps are gluings of polygons, colored triangulations are built as gluings of special, higher-dimensional building blocks, such as octahedra,…

Combinatorics · Mathematics 2018-02-20 Valentin Bonzom

It is known that the Alexander polynomial detects fibered knots and 3-manifolds that fiber over the circle. In this note, we show that when the Alexander polynomial becomes inconclusive, the notion of "knot adjacency", studied in the paper…

Geometric Topology · Mathematics 2008-03-23 Efstratia Kalfagianni , Xiao-Song Lin

The homset invariant of a knot or link L with respect to an algebraic knot coloring structure X can be identified with a set of colorings of a diagram of L by elements of X via an identification of diagrammatic generators with algebraic…

Geometric Topology · Mathematics 2025-09-16 Sam Nelson

The minimum number of colors is a challenging knot invariant since, by definition, its calculation requires taking the minimum over infinitely many minima. In this article we estimate and in some cases calculate the minimum number of colors…

Geometric Topology · Mathematics 2010-02-26 P. Lopes , J. Matias

Following problems posed by Gy\'arf\'as, we show that for every $r$-edge-colouring of $K_n$ there is a monochromatic triple star of order at least $n/(r-1)$, improving a previous result by Ruszink\'o. An edge colouring of a graph is called…

Combinatorics · Mathematics 2013-10-18 Shoham Letzter

An \"{u}bercrossing diagram is a knot diagram with only one crossing that may involve more than two strands of the knot. Such a diagram without any nested loops is called a petal projection. Every knot has a petal projection from which the…

Geometric Topology · Mathematics 2022-08-10 Allison Henrich , Robin Truax

Checkerboard framings are an extension of checkerboard colorings for virtual links. According to checkerboard framings, in 2017, Dye obtained an independent invariant of virtual links: the cut point number. Checkerboard framings and cut…

Geometric Topology · Mathematics 2021-03-25 Qingying Deng

A {\bf $\mathbf{k}$-majority coloring} of a digraph $D=(V,A)$ is a coloring of $V$ with $k$ colors so that each vertex $v\in V$ has at least as many out-neighbours of color different from its own color as it has out-neighbours with the same…

Combinatorics · Mathematics 2025-08-27 Jørgen Bang-Jensen , Francois Pirot , Anders Yeo

Consider the collection of edge bicolorings of a graph that is cellularly embedded on an orientable surface. In this work, we count the number of equivalence classes of such colorings under two relations: reversing colors around a face and…

Geometric Topology · Mathematics 2018-02-13 Oliver T. Dasbach , Heather M. Russell

The clustering of a graph coloring is the maximum size of monochromatic components. This paper studies colorings with bounded clustering in graph classes with bounded layered treewidth, which include planar graphs, graphs of bounded Euler…

Combinatorics · Mathematics 2024-11-05 Chun-Hung Liu , David R. Wood

Knot theory is the Mathematical study of knots. In this paper we have studied the Composition of two knots. Knot theory belongs to Mathematical field of Topology, where the topological concepts such as topological spaces, homeomorphisms,…

Geometric Topology · Mathematics 2023-07-04 G Infant Gabriel , Dr N Uma

A proper $q$-coloring of a graph is an assignment of one of $q$ colors to each vertex of the graph so that adjacent vertices are colored differently. Sample uniformly among all proper $q$-colorings of a large discrete cube in the integer…

Probability · Mathematics 2022-05-26 Ron Peled , Yinon Spinka

We consider the problem of counting the number of 3-colourings of the edges (bonds) of the 4-8 lattice and the 3-12 lattice. These lattices are Archimedean with coordination number 3, and can be regarded as decorated versions of the square…

Statistical Mechanics · Physics 2010-01-28 J. O. Fjaerestad

Quandle coloring quivers are directed graph-valued invariants of oriented knots and links, defined using a choice of finite quandle $X$ and set $S\subset\mathrm{Hom}(X,X)$ of endomorphisms. From a quandle coloring quiver, a polynomial knot…

Geometric Topology · Mathematics 2020-10-02 Jieon Kim , Sam Nelson , Minju Seo

Graph coloring is fundamental to distributed computing. We give the first sub-logarithmic distributed algorithm for coloring cluster graphs. These graphs are obtained from the underlying communication network by contracting nodes and edges,…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-06-17 Maxime Flin , Magnus M. Halldorsson , Alexandre Nolin

From the work of X. S. Lin and Z. Wang, it follows that degree two knot invariant admits a decomposition into the sum of a Gauss diagram count and a term involving Arnold invariants. In this paper we establish an analogous description for…

Geometric Topology · Mathematics 2025-10-07 Ryosuke Hirata
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