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Mixed Moore Cayley Graphs [PDF]

open access: yesJournal of Interconnection Networks, 2017
The degree-diameter problem seeks to find the largest possible number of vertices in a graph having given diameter and given maximum degree. There has been much recent interest in the problem for mixed graphs, where we allow both undirected edges and directed arcs in the graph.
openaire   +2 more sources

On the Mixed Minus Domination in Graphs [PDF]

open access: yesJournal of the Operations Research Society of China, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Xu, Baogen, Kong, Xiangyang
openaire   +1 more source

Uniform Mixing on Cayley Graphs

open access: yesThe Electronic Journal of Combinatorics, 2017
We provide new examples of Cayley graphs on which the quantum walks reach uniform mixing. Our first result is a complete characterization of all $2(d+2)$-regular Cayley graphs over $\mathbb{Z}_3^d$ that admit uniform mixing at time $2\pi/9$. Our second result shows that for every integer $k\ge 3$, we can construct Cayley graphs over $\mathbb{Z}_q^d ...
Chris D. Godsil, Hanmeng Zhan
openaire   +3 more sources

On the Spectra of General Random Mixed Graphs [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2021
A mixed graph is a graph that can be obtained from a simple undirected graph by replacing some of the edges by arcs in precisely one of the two possible directions. The Hermitian adjacency matrix of a mixed graph $G$ of order $n$ is the $n \times n$ matrix $H(G)=(h_{ij})$, where $h_{ij}=-h_{ji}= \boldsymbol{\mathrm{i}}$ (with $\boldsymbol{\mathrm{i}} =\
Dan Hu   +3 more
openaire   +2 more sources

Mixed metric dimension of graphs [PDF]

open access: yesApplied Mathematics and Computation, 2017
arXiv admin note: text overlap with arXiv:1602 ...
Aleksander Kelenc   +3 more
openaire   +3 more sources

Upward Planarity Testing of Embedded Mixed Graphs [PDF]

open access: yes, 2012
A mixed graph has both directed and undirected edges. We study an upward planarity testing problem for embedded mixed graphs and solve it using Integer Linear Programming.
Binucci, Carla   +3 more
core   +1 more source

Mixed metric dimension of hollow coronoid structure

open access: yesAin Shams Engineering Journal, 2023
Coronoid systems actually arrangements of hexagons into six sides of benzenoids. By nature, it is an organic chemical structure. Hollow coronoids are primitive and catacondensed coronoids. It is also known as polycyclic conjugated hydrocarbons.
Ali N.A. Koam   +3 more
doaj   +1 more source

A Self-Supervised Mixed-Curvature Graph Neural Network

open access: yes, 2022
Graph representation learning received increasing attentions in recent years. Most of the existing methods ignore the complexity of the graph structures and restrict graphs in a single constant-curvature representation space, which is only suitable to ...
Peng, Hao   +6 more
core   +1 more source

Some Covering and Packing Problems for Mixed Triples

open access: yesAppliedMath
A mixed graph has both edges and directed edges (or “arcs”). A complete mixed graph on v vertices, denoted Mv, has, for every pair of vertices u and v, an edge {u,v}, an arc (u,v), and an arc (v,u).
Benkam Bobga, Robert Gardner
doaj   +1 more source

Mixed unit interval graphs

open access: yesDiscrete Mathematics, 2012
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Mitre Costa Dourado   +4 more
openaire   +2 more sources

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