Results 61 to 70 of about 1,592 (153)

Formation Drivers and Evolutionary Dynamics of Industry-University-Research Collaborative Networks in China’s Clean Energy Industry

open access: yesSystems
Robust industry-university-research (I-U-R) collaborative networks are essential for accelerating innovation in the clean energy industry (CEI). This study employs the exponential random graph model to investigate how the network structural, node, and ...
Qiezeng Yuan, Heng Chen, Chang Liu
doaj   +1 more source

Classifying the globally rigid edge‐transitive graphs and distance‐regular graphs in the plane

open access: yesJournal of Graph Theory, 2022
AbstractA graph is said to be globally rigid if almost all embeddings of the graph's vertices in the Euclidean plane will define a system of edge‐length equations with a unique (up to isometry) solution. In 2007, Jackson, Servatius and Servatius characterised exactly which vertex‐transitive graphs are globally rigid solely by their degree and maximal ...
openaire   +4 more sources

Tetravalent edge-transitive graphs of girth at most 4

open access: yesJournal of Combinatorial Theory, Series B, 2007
AbstractThis is the first in the series of articles stemming from a systematical investigation of finite edge-transitive tetravalent graphs, undertaken recently by the authors. In this article, we study a special but important case in which the girth of such graphs is at most 4.
Steve Wilson, Primož Potočnik
openaire   +2 more sources

On edge-primitive 3-arc-transitive graphs

open access: green, 2021
Michael Giudici, Carlisle S. H. King
openalex   +2 more sources

On finite edge transitive graphs and rotary maps

open access: yesJournal of Combinatorial Theory, Series B, 2008
It is shown that every connected vertex and edge transitive graph has a normal multicover that is a connected normal edge transitive Cayley graph. Moreover, every chiral or regular map has a normal cover that is a balanced chiral or regular Cayley map, respectively.
openaire   +2 more sources

Uniform finite presentation for groups of polynomial growth

open access: yesDiscrete Analysis
Uniform finite presentation for groups of polynomial growth, Discrete Analysis 2025:1, 29 pp. Let $G$ be a finitely generated infinite group with generators $a_1,\dots,a_k$. The _ball of radius_ $r$ in $G$ is defined to be the set of all elements of $G$
Philip Easo, Tom Hutchcroft
doaj   +1 more source

Graphs on which a dihedral group acts edge-transitively

open access: yesDiscrete Mathematics, 1993
The author determines the graphs \(X\) such that \(\Aut(X)\) contains a subgroup \(D\) isomorphic to a dihedral group, and such that \(D\) acts edge- transitively on \(X\).
openaire   +3 more sources

On super restricted edge-connectivity of edge-transitive graphs

open access: yesDiscrete Mathematics, 2010
Let X=(V,E) be a connected graph. Then X is called super restricted edge-connected, in short, [email protected]^', if every minimum edge set F of X such that X-F is disconnected and every component of X-F has at least two vertices, the set of edges being adjacent to a certain edge with minimum edge degree in X.
Jixiang Meng, Yingzhi Tian
openaire   +2 more sources

Edge-Transitive Graphs [PDF]

open access: green, 2022
Heather Newman   +2 more
openalex   +1 more source

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