Results 21 to 30 of about 1,312,788 (294)

Data Allocation Algorithm for Large Data with All-to-all Comparison Based on Graph Covering [PDF]

open access: yesJisuanji gongcheng, 2018
In the process of distributed processing of all-to-all comparison problem for large data,the existing data allocation strategies think less of the special dependency between the comparison task and the data,which lead to the low storage efficiency and ...
GAO Yanjun,ZHANG Xueying,LI Fenglian,TIAN Yuchu
doaj   +1 more source

Cover Contact Graphs [PDF]

open access: yes, 2008
We study problems that arise in the context of covering certain geometric objects called seeds (e.g., points or disks) by a set of other geometric objects called cover (e.g., a set of disks or homothetic triangles). We insist that the interiors of the seeds and the cover elements are pairwise disjoint, respectively, but they can touch.
Nieves Atienza   +13 more
openaire   +9 more sources

Extensions to emergency vehicle location models [PDF]

open access: yes, 2003
This paper is concerned with extending models for the Maximal Covering Location Problem in two ways. First, the usual 0-1 coverage definition is replaced by the probability of covering a demand within the target time.
Rand, G K, Alsalloum, O I
core   +4 more sources

PELABELAN SELIMUT TOTAL SUPER (a,d)-H ANTIMAGIC PADA GRAPH LOBSTER BERATURAN L_n (q,r)

open access: yesE-Jurnal Matematika, 2017
Graph labelling is a function that maps graph elements to positive integers. A covering of  graph  is  family subgraph from , for  with integer k. Graph  admits  covering if for every subgraph  is isomorphic to a graph  .
TIRA CATUR ROSALIA   +2 more
doaj   +1 more source

Some inequalities involving the distance signless Laplacian eigenvalues of graphs [PDF]

open access: yesTransactions on Combinatorics, 2021
‎Given a simple graph $G$‎, ‎the distance signlesss Laplacian‎ ‎$D^{Q}(G)=Tr(G)+D(G)$ is the sum of vertex transmissions matrix‎ ‎$Tr(G)$ and distance matrix $D(G)$‎.
Abdollah Alhevaz   +3 more
doaj   +1 more source

Covering Regular Graphs

open access: yesJournal of Combinatorial Theory, Series B, 1997
A covering projection from a graph \(G\) onto a graph \(H\) is a ``local isomorphism'': a mapping from the vertex set of \(G\) onto the vertex set of \(H\) such that, for every \(v\in V(G)\), the neighborhood of \(v\) is mapped bijectively onto the neighborhood (in \(H\)) of the image of \(v\).
Jan Kratochvíl   +2 more
openaire   +1 more source

Homotopy Covers of Graphs and Lifting Property

open access: yesWasit Journal for Pure Sciences, 2023
The aim of this paper We create requirements for a graph cover to have the homotopy lifting property of topological space covers, or A-Homotopy lifting property.
salwan abdlwahab, Daher W. Al Baydli
doaj   +1 more source

A Variation of Decomposition Under a Length Constraint [PDF]

open access: yes, 2011
Introducing and initiating a study of a new variation of decomposition namely equiparity induced path decomposition of a graph which is defined to be a decomposition in which all the members are induced paths having same ...
Joseph, Mayamma   +3 more
core   +1 more source

Exact information ratios for secret sharing on small graphs with girth at least 5

open access: yesJournal of Mathematical Cryptology, 2019
In a secret-sharing scheme, a piece of information – the secret – is distributed among a finite set of participants in such a way that only some predefined coalitions can recover it.
Harsányi Károly, Ligeti Péter
doaj   +1 more source

Coverability of Graphs by Parity Regular Subgraphs

open access: yesMathematics, 2021
A graph is even (resp. odd) if all its vertex degrees are even (resp. odd). We consider edge coverings by prescribed number of even and/or odd subgraphs.
Mirko Petruševski, Riste Škrekovski
doaj   +1 more source

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