Results 61 to 70 of about 4,433 (166)

Local strong rainbow connection number of corona product between cycle graphs

open access: yesIndonesian Journal of Combinatorics, 2023
A rainbow geodesic is a shortest path between two vertices where all edges are colored differently. An edge coloring in which any pair of vertices with distance up to d, where d is a positive integer that can be connected by a rainbow geodesic is called ...
Khairunnisa N. Afifah, Kiki A. Sugeng
doaj   +1 more source

Upper Bounds for the Rainbow Connection Numbers of Line Graphs [PDF]

open access: yesGraphs and Combinatorics, 2011
11 ...
Xueliang Li 0001, Yuefang Sun
openaire   +3 more sources

The ecology of hope: Building rainbows in education systems

open access: yesBritish Educational Research Journal, EarlyView.
Abstract Hope is frequently invoked in education, yet rarely theorised. Where it has been theorised, it has been understood in two largely separate ways: as an individual psychological capacity, in the positive‐psychology tradition and as a critical‐emancipatory stance, in the pedagogy of hope.
Jennifer Achari
wiley   +1 more source

ESG Decoupling Phenomenon: A Systematic and Bibliometric Analysis

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT ESG decoupling, defined as the gap between a firm's ESG disclosures and its actual practices, poses a critical challenge to corporate sustainability. Using the PRISMA protocol, 451 articles were selected for a comprehensive bibliometric and systematic literature review to map the intellectual structure and thematic evolution of the research on
Maryam Laeeq   +2 more
wiley   +1 more source

PENENTUAN RAINBOW CONNECTION NUMBER DAN STRONG RAINBOW CONNECTION NUMBER PADA GRAF BERLIAN [PDF]

open access: yesJurnal Matematika UNAND, 2017
Misalkan G = (V, E) adalah suatu graf. Suatu pewarnaan c : E(G) → {1, 2, · · · , k}, k ∈ N pada graf G adalah suatu pewarnaan sisi di G sedemikian sehingga setiap sisi bertetangga boleh berwarna sama. Misalkan u, v ∈ V (G) dan P adalah suatu lintasan dari u ke v. Suatu intasan P dikatakan rainbow path jika tidak terdapat dua sisi di P berwarna
openaire   +3 more sources

PENENTUAN RAINBOW CONNECTION NUMBER UNTUK AMALGAMASI GRAF LENGKAP DENGAN GRAF RODA

open access: yesJurnal Matematika UNAND, 2019
Suatu pewarnaan terhadap sisi-sisi di graf G terhubung tak trivial didefinisikan sebagai c : E(G) → {1, 2, · · · , k} untuk k ∈ N adalah suatu pewarnaan terhadap sisi-sisi di G sedemikian sehingga setiap sisi yang bertetangga boleh diberi warna yang sama.
Risya Hazani Utari   +2 more
doaj   +1 more source

(1, 2)-rainbow connection number at most 3 in connected dense graphs

open access: yesElectronic Journal of Graph Theory and Applications, 2023
Let G be an edge-coloured connected graph G. A path P in the graph G is called l-rainbow path if each subpath of length at most l + 1 is rainbow. The graph G is called (k, l)-rainbow connected if any two vertices in G are connected by at least k pairwise
Trung Duy Doan, Le Thi Duyen
doaj   +1 more source

Expression of mutant TIE2 p.L914F during mouse development causes embryonic lethality and defects in vascular remodeling

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Background Sporadic venous malformation (VM) is associated with the hyperactivating p.L914F mutation in TIE2, a receptor tyrosine kinase essential for vascular development. This mutation is not found in hereditary VM, suggesting incompatibility with life when expressed during early vascular development.
Lindsay J. Bischoff   +6 more
wiley   +1 more source

Chromatic Ramsey Numbers and Two‐Color Turán Densities

open access: yesJournal of Graph Theory, EarlyView.
ABSTRACT Given a graph G, its 2‐color Turán number ex ( 2 ) ( n , G ) is the maximum number of edges in an n‐vertex graph, such that the edges can be colored with two colors avoiding a monochromatic copy of G. Let π ( 2 ) ( G ) = lim n → ∞ ex ( 2 ) ( n , G ) / n 2 be the 2‐color Turán density of G.
Maria Axenovich, Simon Gaa, Dingyuan Liu
wiley   +1 more source

A Note on Extendable Sets of Colorings and Rooted Minors

open access: yesJournal of Graph Theory, EarlyView.
ABSTRACT DeVos and Seymour proved that for every set C $C$ of 3‐colorings of a set X $X$ of vertices, there exists a plane graph G $G$ with vertices of X $X$ incident with the outer face such that a 3‐coloring of X $X$ extends to a 3‐coloring of G $G$ if and only if it belongs to C $C$.
Zdeněk Dvořák, Jan M. Swart
wiley   +1 more source

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