Results 81 to 90 of about 1,401 (109)

On Accurate Domination in Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2019
A dominating set of a graph G is a subset D ⊆ VG such that every vertex not in D is adjacent to at least one vertex in D. The cardinality of a smallest dominating set of G, denoted by γ(G), is the domination number of G. The accurate domination number of
Cyman Joanna   +2 more
doaj   +1 more source

The hybrid number of a ploidy profile. [PDF]

open access: yesJ Math Biol, 2022
Huber KT, Maher LJ.
europepmc   +1 more source

On the multiplicative sum Zagreb index of molecular graphs

open access: yesOpen Mathematics
Multiplicative sum Zagreb index is a modified version of the famous Zagreb indices. For a graph GG, the multiplicative sum Zagreb index is defined as Π1*(G)=∏uv∈E(G)(dG(u)+dG(v)){\Pi }_{1}^{* }\left(G)={\prod }_{uv\in E\left(G)}\left({d}_{G}\left(u)+{d}_{
Sun Xiaoling, Du Jianwei, Mei Yinzhen
doaj   +1 more source

Distinguishing level-1 phylogenetic networks on the basis of data generated by Markov processes. [PDF]

open access: yesJ Math Biol, 2021
Gross E   +5 more
europepmc   +1 more source

The rigid hybrid number for two phylogenetic trees. [PDF]

open access: yesJ Math Biol, 2021
Huber KT, Linz S, Moulton V.
europepmc   +1 more source

Complexity of graphs generated by wheel graph and their asymptotic limits

open access: yesJournal of the Egyptian Mathematical Society, 2017
The literature is very rich with works deal with the enumerating the spanning trees in any graph G since the pioneer Kirchhoff (1847). Generally, the number of spanning trees in a graph can be acquired by directly calculating an associated determinant ...
S.N. Daoud
doaj  

(In)dependence of the axioms of Λ-trees

open access: yesAnalysis and Geometry in Metric Spaces
A Λ\Lambda -tree is a Λ\Lambda -metric space satisfying three axioms (1), (2), and (3). We give a characterization of those ordered abelian groups Λ\Lambda for which axioms (1) and (2) imply axiom (3).
Appenzeller Raphael
doaj   +1 more source

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