Results 21 to 30 of about 609,490 (168)

Leveraging Spatio-Temporal Graphs and Knowledge Graphs: Perspectives in the Field of Maritime Transportation

open access: yesISPRS International Journal of Geo-Information, 2021
This paper introduces a prospective study of the potential of spatio-temporal graphs (ST-graphs) and knowledge graphs (K-graphs) for the modelling of geographical phenomena.
Géraldine Del Mondo   +4 more
doaj   +1 more source

Graph equations for line graphs, total graphs, middle graphs and quasi-total graphs

open access: yesDiscrete Mathematics, 1984
Let G be a simple finite and connected graph with the vertex set V(G) and the edge set X(G). Let V'(G) be the family of all one-point subsets of V(G). Both the line graph L(G) of G and the total graph T(G) of G are standard graph theoretical concepts. The middle graph M(G) of G is the intersection graph of \(V'(G)\cup X(G)\) and the quasi-total graph P(
Sastry, D.V.S, Raju, B.Syam Prasad
openaire   +2 more sources

Graph saturation in multipartite graphs [PDF]

open access: yesJournal of Combinatorics, 2016
16 pages, 4 ...
Ferrara, Michael   +3 more
openaire   +2 more sources

Kolmogorov Basic Graphs and Their Application in Network Complexity Analysis

open access: yesEntropy, 2021
Throughout the years, measuring the complexity of networks and graphs has been of great interest to scientists. The Kolmogorov complexity is known as one of the most important tools to measure the complexity of an object.
Amirmohammad Farzaneh   +2 more
doaj   +1 more source

Graph Equations for Line Graphs, Jump Graphs, Middle Graphs, Splitting Graphs And Line Splitting Graphs

open access: yesMapana - Journal of Sciences, 2010
For a graph G, let G, L(G), J(G) S(G), L,(G) and M(G) denote Complement, Line graph, Jump graph, Splitting graph, Line splitting graph and Middle graph respectively. In this paper, we solve the graph equations L(G) =S(H), M(G) = S(H), L(G) = LS(H), M(G) =LS(H), J(G) = S(H), M(G) = S(H), J(G) = LS(H) and M(G) = LS(G).
B. Basavanagoud, Veena Mathad
openaire   +2 more sources

Planar Graphs as VPG-Graphs [PDF]

open access: yesJournal of Graph Algorithms and Applications, 2013
Summary: A graph is \(B_k\)-VPG when it has an intersection representation by paths in a rectangular grid with at most \(k\) bends (turns). It is known that all planar graphs are \(B_3\)-VPG and this was conjectured to be tight. We disprove this conjecture by showing that all planar graphs are \(B_2\)-VPG.
Chaplick, Steven, Ueckerdt, Torsten
openaire   +3 more sources

Basics of modeling and technology of creating reinforced concrete elements of “Monofant” system construction

open access: yesMATEC Web of Conferences, 2017
In architectural and construction system “Monofant” a self-supporting skeleton consisting of a spatial curvilinear framework and unrecoverable hollow-core inserts made of expanded polystyrene was used to erect buildings and structures of curved shapes ...
Bugayevskiy Sergey   +3 more
doaj   +1 more source

GRAPH-LINKS

open access: yesDoklady Mathematics, 2009
32 pages, 21 ...
Ilyutko, Denis Petrovich   +1 more
openaire   +2 more sources

Graph Powers and Graph Homomorphisms [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2010
In this paper, we investigate some basic properties of fractional powers. In this regard, we show that for any non-bipartite graph $G$ and positive rational numbers ${2r+1\over 2s+1} < {2p+1\over 2q+1}$, we have $G^{2r+1\over 2s+1} < G^{2p+1\over 2q+1}$. Next, we study the power thickness of $G$, that is, the supremum of rational numbers ${2r+
Hajiabolhassan, Hossein, Taherkhani, Ali
openaire   +3 more sources

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