Results 21 to 30 of about 1,691,893 (274)

A graph rewriting programming language for graph drawing [PDF]

open access: yes, 1998
This paper describes Grrr, a prototype visual graph drawing tool. Previously there were no visual languages for programming graph drawing algorithms despite the inherently visual nature of the process.
Rodgers, Peter
core   +1 more source

Detecting Matching Blunders of Multi-Source Remote Sensing Images via Graph Theory

open access: yesSensors, 2020
Large radiometric and geometric distortion in multi-source images leads to fewer matching points with high matching blunder ratios, and global geometric relationship models between multi-sensor images are inexplicit.
Cailong Deng   +3 more
doaj   +1 more source

Isomorphic Factorisations. I: Complete Graphs [PDF]

open access: yesTransactions of the American Mathematical Society, 1978
An isomorphic factorisation of the complete graphKp{K_p}is a partition of the lines ofKp{K_p}intotisomorphic spanning subgraphsG; we then writeG|KpG|{K_p}, andG∈Kp/tG \in {K_p}/t. If the set of graphsKp/t{K_p}/tis not empty, then of courset|p(p−1)/2t|p(p - 1)/2. Our principal purpose is to prove the converse.
Harary, Frank   +2 more
openaire   +2 more sources

A Note on the Geometry of Closed Loops

open access: yesMathematics, 2023
In this paper, we utilize the Ramsey theory to investigate the geometrical characteristics of closed contours. We begin by examining a set of six points arranged on a closed contour and connected as a complete graph. We assign the downward-pointing edges
Nir Shvalb   +3 more
doaj   +1 more source

Decompositions of Complete Bipartite Graphs and Complete Graphs Into Paths, Stars, and Cycles with Four Edges Each

open access: yesDiscussiones Mathematicae Graph Theory, 2021
Let G be either a complete graph of odd order or a complete bipartite graph in which each vertex partition has an even number of vertices. In this paper, we determine the set of triples (p, q, r), with p, q, r > 0, for which there exists a decomposition ...
Shyu Tay-Woei
doaj   +1 more source

Avoider-enforcer star games [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2015
Combinatorics
Andrzej Grzesik   +5 more
doaj   +1 more source

Character degree graphs that are complete graphs [PDF]

open access: yesProceedings of the American Mathematical Society, 2006
Let \(G\) be a finite group and let \(\text{cd}(G)\) denote the different integers which occur as the degrees of the irreducible complex characters of \(G\). Let \(\Gamma(G)\) be the graph whose vertex set is \(\text{cd}(G)-\{1\}\). An edge joins two vertices represented by positive integers \(a\) and \(b\) if \(\gcd(a,b)>1\). The authors prove that if
M. Bianchi   +3 more
openaire   +4 more sources

PENGGUNAAN METODE CUTTING PLANE UNTUK MENYELESAIKAN MINIMUM SPANNING TREE DENGAN KENDALA BOBOT PADA GRAF K_n

open access: yesAksioma: Jurnal Program Studi Pendidikan Matematika, 2018
This study aims to determine the minimum spanning tree of a complete graph K_n with weight constraints and completion using the cutting plane method. The cutting plane method is one of the algorithms included in the exact method.
Dewi Suhika, Wamiliana Wamiliana
doaj   +1 more source

Dynamic Ramsey Theory of Mechanical Systems Forming a Complete Graph and Vibrations of Cyclic Compounds

open access: yesDynamics, 2023
Ramsey theory constitutes the dynamics of mechanical systems, which may be described as abstract complete graphs. We address a mechanical system which is completely interconnected by two kinds of ideal Hookean springs.
Nir Shvalb   +3 more
doaj   +1 more source

On the Semigroup Whose Elements Are Subgraphs of a Complete Graph

open access: yesMathematics, 2018
Let K n be a complete graph on n vertices. Denote by S K n the set of all subgraphs of K n . For each G , H ∈ S K n , the ring sum of G and H is a graph whose vertex set is V ( G ) ∪ V ( H ) and whose edges are ...
Yanisa Chaiya   +3 more
doaj   +1 more source

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