Results 21 to 30 of about 3,369,792 (260)

One-factorizations of the complete graph $K_{p+1}$ arising from parabolas

open access: yesTheory and Applications of Graphs, 2022
There are three types of affine regular polygons in AG(2, q): ellipse, hyperbola and parabola. The first two cases have been investigated in previous papers.
György Kiss   +2 more
doaj   +1 more source

Monochromatic triangles in three-coloured graphs [PDF]

open access: yes, 2013
In 1959, Goodman [9] determined the minimum number of monochromatic triangles in a complete graph whose edge set is 2-coloured. Goodman (1985) [10] also raised the question of proving analogous results for complete graphs whose edge sets are coloured ...
Král', D.   +16 more
core   +1 more source

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

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

Decompositions of complete graphs and complete bipartite graphs into isomorphic supersubdivision graphs

open access: yesDiscrete Mathematics, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
G. Sethuraman 0001, P. Selvaraju
openaire   +2 more sources

Radio Labeling for Strong Product K3 ⊠ Pn

open access: yesIEEE Access, 2020
Many variations of graph labeling has been defined in the literature. e.g., graceful, harmonious and radio labeling etc. In information technology and in data sciences, we need secrecy of data, different channel assignment and accuracy of transmission of
Hengxiao Qi   +4 more
doaj   +1 more source

On Order Prime Divisor Graphs of Finite Groups

open access: yesDiscussiones Mathematicae - General Algebra and Applications, 2021
The order prime divisor graph 𝒫𝒟(G) of a finite group G is a simple graph whose vertex set is G and two vertices a, b ∈ G are adjacent if and only if either ab = e or o(ab) is some prime number, where e is the identity element of the group G and o(x ...
Sen Mridul K.   +2 more
doaj   +1 more source

GCD-graphs and NEPS of complete graphs

open access: yesArs Mathematica Contemporanea, 2012
A gcd-graph is a Cayley graph over a finite abelian group defined by greatest common divisors. Such graphs are known to have integral spectrum. A non-complete extended p-sum, or NEPS in short, is well-known general graph product. We show that the class of gcd-graphs and the class of NEPS of complete graphs coincide.
Klotz, Walter, Sander, Torsten
openaire   +3 more sources

Decomposition of Complete, Complete Bipartite, and Complete Tripartite Graphs into Half-Sunlet Graphs of Order Twelve

open access: yesMathematics
The half-sunlet graph HS3k is a 2k-cycle with a pendant edge at every alternate vertex (|V|=|E|=3k). We give a complete decomposition theory for HS12 (k=4), characterising when HS12 decomposes G for G complete, complete bipartite, and complete tripartite.
Gajendran Palaniyandi   +2 more
doaj   +1 more source

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

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