Results 11 to 20 of about 293,400 (267)

On Partition Dimension of Generalized Convex Polytopes

open access: yesJournal of Mathematics, 2023
Let G be a graph having no loop or multiple edges, k−order vertex partition for G is represented by γ=γ1,γ2,…,γk. The vector rϕγ=dϕ,γ1,dϕ,γ2,dϕ,γ3⋯,dϕ,γk is the representation of vertex ϕ with respect to γ.
Syed Waqas Shah   +5 more
doaj   +1 more source

The partition dimension of a subdivision of a homogeneous firecracker

open access: yesElectronic Journal of Graph Theory and Applications, 2020
Finding the partition dimension of a graph is one of the interesting (and uncompletely solved) problems of graph theory. For instance, the values of the partition dimensions for most kind of trees are still unknown.  Although for several classes of trees
Amrullah Amrullah
doaj   +1 more source

A Quasi-Polynomial Time Partition Oracle for Graphs with an Excluded Minor [PDF]

open access: yes, 2013
Motivated by the problem of testing planarity and related properties, we study the problem of designing efficient {\em partition oracles}. A {\em partition oracle} is a procedure that, given access to the incidence lists representation of a bounded ...
Levi, Reut, Ron, Dana
core   +1 more source

A new multi-level algorithm for balanced partition problem on large scale directed graphs

open access: yesAdvances in Aerodynamics, 2021
Graph partition is a classical combinatorial optimization and graph theory problem, and it has a lot of applications, such as scientific computing, VLSI design and clustering etc.
Xianyue Li   +4 more
doaj   +1 more source

Graph homomorphisms and components of quotient graphs [PDF]

open access: yes, 2016
We study how the number $c(X)$ of components of a graph $X$ can be expressed through the number and properties of the components of a quotient graph $X/\sim.$ We partially rely on classic qualifications of graph homomorphisms such as locally constrained ...
Bubboloni, Daniela
core   +2 more sources

A nonamenable "factor" of a Euclidean space [PDF]

open access: yes, 2020
Answering a question of Benjamini, we present an isometry-invariant random partition of the Euclidean space $\mathbb{R}^d$, $d\geq 3$, into infinite connected indistinguishable pieces, such that the adjacency graph defined on the pieces is the 3-regular ...
Timar, Adam
core   +3 more sources

Equitable partition of graphs into induced forests [PDF]

open access: yes, 2015
An equitable partition of a graph $G$ is a partition of the vertex-set of $G$ such that the sizes of any two parts differ by at most one. We show that every graph with an acyclic coloring with at most $k$ colors can be equitably partitioned into $k-1 ...
Esperet, Louis   +2 more
core   +3 more sources

On The Partition Dimension of Disconnected Graphs

open access: yesJournal of Mathematical and Fundamental Sciences, 2017
For a graph G=(V,E), a partition Ω=\{O_1,O_2,…,O_k \} of the vertex set V is called a resolving partition if every pair of vertices u,v∈V(G) have distinct representations under Ω.
Debi Oktia Haryeni   +2 more
doaj   +1 more source

$\mathcal{B}$-Partitions, determinant and permanent of graphs [PDF]

open access: yesTransactions on Combinatorics, 2018
Let $G$ be a graph (directed or undirected) having $k$ number of blocks $B_1, B_2,\hdots,B_k$. A $\mathcal{B}$-partition of $G$ is a partition consists of $k$ vertex-disjoint subgraph $(\hat{B_1},\hat{B_1},\hdots,\hat{B_k})$ such that $\hat{B}_i$ is an ...
Ranveer Singh, Ravindra Bapat
doaj   +1 more source

Partitioning a graph into highly connected subgraphs [PDF]

open access: yes, 2015
Given $k\ge 1$, a $k$-proper partition of a graph $G$ is a partition ${\mathcal P}$ of $V(G)$ such that each part $P$ of ${\mathcal P}$ induces a $k$-connected subgraph of $G$. We prove that if $G$ is a graph of order $n$ such that $\delta(G)\ge \sqrt{n}$
Borozan, Valentin   +6 more
core   +2 more sources

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