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We present a novel platform for the interactive visualization of very large graphs. The platform enables the user to interact with the visualized graph in a way that is very similar to the exploration of maps at multiple levels. Our…

Human-Computer Interaction · Computer Science 2016-11-17 Nikos Bikakis , John Liagouris , Maria Krommyda , George Papastefanatos , Timos Sellis

In this paper, we propose a new drag and drop interaction technique for graphs. We designed this interaction to support analysis in complex multidimensional and temporal graphs. The drag and drop interaction is enhanced with an intuitive…

Human-Computer Interaction · Computer Science 2019-02-06 Benjamin Renoust , Haolin Ren , Guy Melançon

A {\it dynamic $k$-coloring} of a graph $G$ is a proper $k$-coloring of the vertices of $G$ such that every vertex of degree at least 2 in $G$ will be adjacent to vertices with at least 2 different colors. The smallest number $k$ for which…

Discrete Mathematics · Computer Science 2007-11-20 Xueliang Li , Wenli Zhou

In this paper we introduce a different kind of graph energy, the minimum 3-covering energy of a graph, and determine the minimum 3-covering energy of complete graphs.

Combinatorics · Mathematics 2013-03-20 Paul August Winter

We show that for every l, there exists d_l such that every 3-edge-connected graph with minimum degree d_l can be edge-partitioned into paths of length l (provided that its number of edges is divisible by l). This improves a result asserting…

Combinatorics · Mathematics 2019-07-29 Tereza Klimošová , Stéphan Thomassé

Consider two horizontal lines in the plane. A pair of a point on the top line and an interval on the bottom line defines a triangle between two lines. The intersection graph of such triangles is called a simple-triangle graph. This paper…

Discrete Mathematics · Computer Science 2016-11-29 Asahi Takaoka

We propose a new algorithm for 3-coloring that runs in time O(1.3217^n). For this algorithm, we make use of the time O(1.3289^n) algorithm for 3-coloring by Beigel and Eppstein. They described a structure in all graphs, whose vertices could…

Data Structures and Algorithms · Computer Science 2023-02-28 Lucas Meijer

This manuscript introduces Diophantine labeling, a new way of labeling of the vertices for finite simple undirected graphs with some divisibility condition on the edges. Maximal graphs admitting Diophantine labeling are investigated and…

Combinatorics · Mathematics 2026-01-01 A. Nasr , A. Elsonbaty , M. A. Seoud , M. Anwar

Guided synthesis of high-quality 3D scenes is a challenging task. Diffusion models have shown promise in generating diverse data, including 3D scenes. However, current methods rely directly on text embeddings for controlling the generation,…

Computer Vision and Pattern Recognition · Computer Science 2023-08-10 Mohammad Naanaa , Katharina Schmid , Yinyu Nie

A directed acyclic graph (DAG) can represent a two-dimensional string or picture. We propose recognizing picture languages using DAG automata by encoding 2D inputs into DAGs. An encoding can be input-agnostic (based on input size only) or…

Formal Languages and Automata Theory · Computer Science 2026-05-26 Yvo Ad Meeres , František Mráz

Three dimensional (3D) toric codes are a class of stabilizer codes with local checks and come under the umbrella of topological codes. While decoding algorithms have been proposed for the 3D toric code on a cubic lattice, there have been…

Quantum Physics · Physics 2019-11-15 Arun B. Aloshious , Pradeep Kiran Sarvepalli

We show that given an $n$-vertex graph $G$ of diameter 3 we can decide if $G$ is $3$-colourable in time $2^{O(n^{2/3-\varepsilon})}$ for any $\varepsilon < 1/33$. This improves on the previous best algorithm of $2^{O((n\log n)^{2/3})}$ from…

Combinatorics · Mathematics 2026-05-26 Carla Groenland , Hidde Koerts , Sophie Spirkl

We discuss the use of 3D printing to physically visualize (materialize) fluid flow structures. Such 3D models can serve as a refreshing hands-on means to gain deeper physical insights into the formation of complex coherent structures in…

Fluid Dynamics · Physics 2017-07-07 Kunihiko Taira , Yiyang Sun , Daniel Canuto

We prove that every 1-planar graph G has a z-parallel visibility representation, i.e., a 3D visibility representation in which the vertices are isothetic disjoint rectangles parallel to the xy-plane, and the edges are unobstructed…

Computational Geometry · Computer Science 2017-08-22 Patrizio Angelini , Michael A. Bekos , Michael Kaufmann , Fabrizio Montecchiani

A generalization of list-coloring, now known as DP-coloring, was recently introduced by Dvo\v{r}\'{a}k and Postle. Essentially, DP-coloring assigns an arbitrary matching between lists of colors at adjacent vertices, as opposed to only…

Combinatorics · Mathematics 2018-09-21 Runrun Liu , Sarah Loeb , Martin Rolek , Yuxue Yin , Gexin Yu

A \emph{three-dimensional grid drawing} of a graph is a placement of the vertices at distinct points with integer coordinates, such that the straight line segments representing the edges do not cross. Our aim is to produce three-dimensional…

Combinatorics · Mathematics 2007-05-23 Vida Dujmović , David R. Wood

We introduce a notion of "simulation" for labelled graphs, in which edges of the simulated graph are realized by regular expressions in the simulating graph, and prove that the tiling problem (aka "domino problem") for the simulating graph…

Combinatorics · Mathematics 2021-10-04 Laurent Bartholdi , Ville Salo

We describe a tool to create, edit, visualise and compute with interaction nets - a form of graph rewriting systems. The editor, called GraphPaper, allows users to create and edit graphs and their transformation rules using an intuitive…

Logic in Computer Science · Computer Science 2010-03-24 Maribel Fernández , Olivier Namet

We present the first version of E3D, the Euro3D visualization tool for data from integral field spectroscopy. We describe its major characteristics, based on the proposed requirements, the current state of the project, and some planned…

Astrophysics · Physics 2009-11-10 S. F. Sanchez

We adapt multilevel, force-directed graph layout techniques to visualizing dynamic graphs in which vertices and edges are added and removed in an online fashion (i.e., unpredictably). We maintain multiple levels of coarseness using a…

Graphics · Computer Science 2007-12-11 Todd L. Veldhuizen
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