Results 111 to 120 of about 6,714 (280)

On the strong beta-number of galaxies with three and four components

open access: yesAKCE International Journal of Graphs and Combinatorics, 2020
The beta-number of a graph is the smallest positive integer for which there exists an injective function such that each is labeled and the resulting set of edge labels is for some positive integer . The beta-number of is if there exists no such integer .
Rikio Ichishima   +2 more
doaj   +1 more source

On the Number of α-Labeled Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2018
When a graceful labeling of a bipartite graph places the smaller labels in one of the stable sets of the graph, it becomes an α-labeling. This is the most restrictive type of difference-vertex labeling and it is located at the very core of this research ...
Barrientos Christian, Minion Sarah
doaj   +1 more source

ON k-GRACEFUL LABELING OF SOME GRAPHS

open access: yesJournal of applied mathematics & informatics, 2016
Summary: In this paper, it has been shown that the hairy cycle \(C_{n}\odot rK_{1},\) \(n\equiv 3\pmod 4\), the graph obtained by adding pendant edge to each pendant vertex of hairy cycle \(C_{n}\odot 1K_{1}\), \(n\equiv 0\pmod 4\), double graph of path \(P_{n}\) and double graph of comb \(P_{n}\odot 1K_{1}\) are \(k\)-graceful.
Pradhan, P., Kumar, Kamesh
openaire   +3 more sources

Counting and labeling grid related graphs

open access: yesElectronic Journal of Graph Theory and Applications, 2019
In this work we explore some graphs associated with the grid Pm × Pn. A fence is any subgraph of the grid obtained by deleting any feasible number of edges from some or all the copies of Pm.
Christian Barrientos, Sarah Minion
doaj   +1 more source

Graceful Labellings of Various Cyclic Snakes

open access: yes, 2020
19 ...
Alkasasbeh, Ahmad H., Dyer, Danny
openaire   +2 more sources

Graceful Labeling of Spider Graphs With at Most Five Legs

open access: yesJournal of Applied Mathematics
A graceful labeling of a graph G with q edges is an injection f from the vertices of G to the set 0,1,⋯,q such that, when each edge uv is assigned the label fu−fv, the resulting edge labels are distinct.
A. Panpa, S. Imnang, T. Wasuanankul
doaj   +1 more source

A critical reappraisal of the carotid sinus and carotid bulb: Distinguishing neurohistological function from vascular geometry

open access: yesThe Anatomical Record, EarlyView.
This review redefines the carotid bulb (CB) as a variable geometric dilation shaped by hemodynamics and the carotid sinus (CS) as a conserved neurohistological baroreceptor field. Distinguishing these entities clarifies a century of anatomical confusion and links geometry, neurohistology, and clinical interpretation within a unified framework ...
Răzvan Costin Tudose   +2 more
wiley   +1 more source

Cytokine Pathways Driving Diverse Tissue Pathologies in Rheumatoid Arthritis

open access: yesArthritis &Rheumatology, EarlyView.
Rheumatoid arthritis (RA) is a complex systemic disorder characterized primarily by articular inflammation and destruction with associated functional loss and reduced quality of life. RA is also associated with extra‐articular disease, such as that of the lung, with potentially devastating clinical consequences. The critical importance of comorbidities,
Aurelie Najm   +2 more
wiley   +1 more source

Random Generation Topology Coding Technique in Asymmetric Topology Encryption

open access: yesMathematics
The security of traditional public key cryptography algorithms depends on the difficulty of the underlying mathematical problems. Asymmetric topological encryption is a graph-dependent encryption algorithm produced to resist attacks by quantum computers ...
Jing Su, Bing Yao
doaj   +1 more source

Why do people choose to enter and exit the teaching profession? An interdisciplinary quantitative synthesis

open access: yesBritish Educational Research Journal, EarlyView.
Abstract Many nations experience recurring shortages of teachers in particular subjects, prompting concerns that pupils' education is suffering as a result. Researchers have responded by generating a sizable literature on the reasons for which people enter and exit the teaching profession.
Sam Sims   +2 more
wiley   +1 more source

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