Results 41 to 50 of about 26,105 (190)

Weakened Gallai-Ramsey numbers [PDF]

open access: yesSurveys in Mathematics and its Applications, 2018
In the Ramsey theory of graphs, one seeks to determine the value of the Ramsey number rt(n), defined to be the least natural number p such that every coloring of the edges of Kp using t colors results in a monochromatic copy of Kn in some color.
Gabrielle Beam, Mark Budden
doaj  

Rainbow connection number of generalized composition

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
Let be a connected graph with . The rainbow connection number is the smallest for which there is a map such that any two vertices can be connected by a path whose edge colors are all distinct.
Fendy Septyanto, Kiki Ariyanti Sugeng
doaj   +1 more source

Computing Correlation among the Graphs under Lexicographic Product via Zagreb Indices

open access: yesJournal of Chemistry, 2021
A topological index (TI) is a numerical descriptor of a molecule structure or graph that predicts its different physical, biological, and chemical properties in a theoretical way avoiding the difficult and costly procedures of chemical labs.
Muhammad Javaid   +3 more
doaj   +1 more source

New concepts on level graphs of vague graphs with application in medicine

open access: yesFrontiers in Physics, 2023
Vague graphs (VGs), belonging to the fuzzy graph (FG) family, have good capabilities when facing problems that cannot be expressed by FGs. When an element membership is unclear, neutrality is a good option that can be well-supported by a VG. The previous
Xiaolong Shi   +3 more
doaj   +1 more source

Hamiltonian decomposition of lexicographic product

open access: yesJournal of Combinatorial Theory, Series B, 1981
AbstractIn this paper we prove the conjecture of J.-C. Bermond (Ann. Discrete Math. 36 (1978), 21–28): If two graphs are decomposable into Hamiltonian cycles, then their lexicographic product is decomposable, too.
Baranyai, Z, Szász, Gy.R
openaire   +2 more sources

From Nominalisation to Passive in Old Tibetan: Reconstructing Grammatical Meaning in an Extinct Language1

open access: yesTransactions of the Philological Society, EarlyView.
Abstract Based on an analysis of the Old Literary Tibetan corpus—a corpus of the oldest documented Tibetic language—the present study provides evidence that literary Tibetan v3 verb stems (commonly termed ‘future’) initially encoded passive voice. New arguments put forward in this article range from Trans‐Himalayan nominal morphology to early Tibetan ...
Joanna Bialek
wiley   +1 more source

Broadcast domination of lexicographic and modular products of graphs

open access: yesAKCE International Journal of Graphs and Combinatorics, 2022
A dominating broadcast labeling of a graph G is a function [Formula: see text] such that [Formula: see text] for all [Formula: see text] where e(v) is the eccentricity of v, and for every vertex [Formula: see text] there exists a vertex v with [Formula ...
Jishnu Sen, Srinivasa Rao Kola
doaj   +1 more source

Comparative Study of Generalized Sum Graphs via Degree-Based Topological Indices

open access: yesJournal of Mathematics, 2022
In theoretical chemistry, topological indices (TIs) have important role to predict various physical and structural properties of the study under molecular graphs.
Muhammad Javaid   +2 more
doaj   +1 more source

On the weak Roman domination number of lexicographic product graphs

open access: yes, 2018
A vertex $v$ of a graph $G=(V,E)$ is said to be undefended with respect to a function $f: V \longrightarrow \{0,1,2\}$ if $f(v)=0$ and $f(u)=0$ for every vertex $u$ adjacent to $v$.
Pérez-Rosés, Hebert   +2 more
core   +1 more source

‘Enthusiasts’ and ‘Fanatics’: The Decembrists as a Case Study in French Influence on Russian Culture, Emotions and Thought

open access: yesHistory, EarlyView.
Abstract Participants in Russia's 1825 Decembrist uprising against the Tsarist regime were, quite literally, a case study in French cultural influence upon Russia. This is particularly true as it relates to Russia's emotional cultures. Although this has not, traditionally, been the primary focus of historical analysis of this event (in Soviet or ...
ADAM COKER
wiley   +1 more source

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