Results 61 to 70 of about 963 (204)

A New Kind of Dominated Coloring of Some Special Graphs

open access: yesJournal of Mathematics, Volume 2026, Issue 1, 2026.
This paper introduces the concept of locating‐dominated coloring, a new graph coloring parameter that merges the properties of dominated coloring and locating coloring. For a connected graph G, a locating‐dominated coloring is defined as a proper dominated k‐coloring of G using an ordered partition of V(G) to k‐color classes Π = (C1, C2, …, Ck) such ...
F. Poryousefi   +3 more
wiley   +1 more source

AN ISOMORPHISM THEOREM FOR UNICYCLIC GRAPHS

open access: yesDemonstratio Mathematica, 1993
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

On super vertex-graceful unicyclic graphs [PDF]

open access: yesCzechoslovak Mathematical Journal, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Lee, Sin-Min, Leung, Elo, Ng, Ho Kuen
openaire   +1 more source

Unbalanced unicyclic and bicyclic graphs with extremal spectral radius [PDF]

open access: yes, 2021
summary:A signed graph $\Gamma $ is a graph whose edges are labeled by signs. If $\Gamma $ has $n$ vertices, its spectral radius is the number $\rho (\Gamma ) := \max \{ | \lambda _i(\Gamma ) | \colon 1 \leq i \leq n \}$, where $\lambda _1(\Gamma ) \geq \
Brunetti, Maurizio   +2 more
core   +1 more source

Fast Construction on a Restricted Budget

open access: yesRandom Structures &Algorithms, Volume 67, Issue 4, December 2025.
ABSTRACT We introduce a model of a controlled random graph process. In this model, the edges of the complete graph Kn$$ {K}_n $$ are ordered randomly and then revealed, one by one, to a player called Builder. He must decide, immediately and irrevocably, whether to purchase each observed edge.
Alan Frieze   +2 more
wiley   +1 more source

The Entropy of Weighted Graphs with Atomic Bond Connectivity Edge Weights

open access: yesDiscrete Dynamics in Nature and Society, 2018
The aim of this report to solve the open problem suggested by Chen et al. We study the graph entropy with ABC edge weights and present bounds of it for connected graphs, regular graphs, complete bipartite graphs, chemical graphs, tree, unicyclic graphs ...
Young Chel Kwun   +4 more
doaj   +1 more source

Introducing New Exponential Zagreb Indices for Graphs

open access: yesJournal of Mathematics, 2021
New graph invariants, named exponential Zagreb indices, are introduced for more than one type of Zagreb index. After that, in terms of exponential Zagreb indices, lists on equality results over special graphs are presented as well as some new bounds on ...
Nihat Akgunes, Busra Aydin
doaj   +1 more source

Locating eigenvalues of unicyclic graphs

open access: yes, 2017
We present a linear time algorithm that computes the number of eigenvalues of a unicyclic graph in a given real interval. It operates directly on the graph, so that the matrix is not needed explicitly.
Virgínia Rodrigues   +2 more
core   +1 more source

Recognizing Trees From Incomplete Decks

open access: yesJournal of Graph Theory, Volume 110, Issue 3, Page 322-336, November 2025.
ABSTRACT Given a graph G, the unlabeled subgraphs G − v are called the cards of G. The deck of G is the multiset { G − v : v ∈ V ( G ) }. Wendy Myrvold showed that a disconnected graph and a connected graph both on n vertices have at most ⌊ n 2 ⌋ + 1 cards in common and found (infinite) families of trees and disconnected forests for which this upper ...
Gabriëlle Zwaneveld
wiley   +1 more source

Degree distance of unicyclic graphs

open access: yes, 2010
The degree distance of a connected graph G with vertex set V(G) is defined as D'(G)= ?u?V (G) dG (u)DG (u), where dG (u) denotes the degree of vertex u and DG (u) denotes the sum of distances between u and all vertices of G.
Bo Zhou, Zhibin Du
core   +1 more source

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