Results 31 to 40 of about 3,967,804 (356)

Reformulated Zagreb Indices of Some Derived Graphs

open access: yesMathematics, 2019
A topological index is a numeric quantity that is closely related to the chemical constitution to establish the correlation of its chemical structure with chemical reactivity or physical properties.
Jia-Bao Liu   +4 more
doaj   +1 more source

Photodisintegration of the deuteron in the few GeV region using asymptotic amplitudes [PDF]

open access: yes, 1999
Exclusive photodisintegration of the deuteron in the 1-4GeV range is described in terms of a simple covariant and gauge invariant approach using an effective counting rule as the hard part of the d-np vertex.
Dieperink, A. E. L., Nagorny, S. I.
core   +2 more sources

Vertex arboricity and maximum degree

open access: yesDiscrete Mathematics, 1995
This paper mainly proves that if a connected graph \(G= (V,E)\) is neither a cycle nor a clique, then there is a coloring of \(V\) with at most \(\lceil {{\Delta (G)} \over 2} \rceil\) colors such that all color classes induce forests and one of them is a minimum induced forest in \(G\).
Catlin, Paul A., Lai, Hong-Jian
openaire   +1 more source

On clustering of conditional configuration graphs

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2018
We consider configuration graphs with N vertices. The degrees of the vertices are independent identically distributed limited random variables. They are equal to the number of vertex semiedges that are numbered in an arbitrary order.
Yury Pavlov
doaj   +1 more source

Minimum Vertex Degree Threshold for ‐tiling* [PDF]

open access: yesJournal of Graph Theory, 2014
AbstractWe prove that the vertex degree threshold for tiling (the 3‐uniform hypergraph with four vertices and two triples) in a 3‐uniform hypergraph on vertices is , where if and otherwise. This result is best possible, and is one of the first results on vertex degree conditions for hypergraph tiling.
Jie Han, Yi Zhao
openaire   +1 more source

On conditional configuration graphs with random distribution of vertex degrees

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2016
We consider a configuration graph with N vertices. The degrees of the vertices are drawn independently from a discrete power-law distribution with positive parameter τ . They are equal to the number of each vertex’s numbered semiedges.
Yury Pavlov
doaj   +1 more source

Tree Inference: Response Time and Other Measures in a Binary Multinomial Processing Tree, Representation and Uniqueness of Parameters

open access: yesMathematics, 2022
A Multinomial Processing Tree (MPT) is a directed tree with a probability associated with each arc and partitioned terminal vertices. We consider an additional parameter for each arc, a measure such as time. Each vertex represents a process.
Richard Schweickert, Xiaofang Zheng
doaj   +1 more source

Exact Solutions of a Generalized Weighted Scale Free Network

open access: yesJournal of Applied Mathematics, 2013
We investigate a class of generalized weighted scale-free networks, where the new vertex connects to m pairs of vertices selected preferentially. The key contribution of this paper is that, from the standpoint of random processes, we provide rigorous ...
Li Tan, Dingyou Lei
doaj   +1 more source

Immunization for complex network based on the effective degree of vertex

open access: yes, 2011
The basic idea of many effective immunization strategies is first to rank the importance of vertices according to the degrees of vertices and then remove the vertices from highest importance to lowest until the network becomes disconnected.
Barabási A.-L.   +10 more
core   +1 more source

Degree distance and vertex-connectivity

open access: yesDiscrete Applied Mathematics, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ali, P., Mukwembi, S., Munyira, S.
openaire   +2 more sources

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