Примеры использования Generalized petersen graph на Английском языке и их переводы на Русский язык
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Every generalized Petersen graph is a unit distance graph. .
These seven graphs are therefore the only symmetric generalized Petersen graphs.
The generalized Petersen graph G(9,2) is one of the few graphs known to have only one 3-edge-coloring.
See Alspach(1983) for a classificiation of non-Hamiltonian generalized Petersen graphs.
Prism graphs are examples of generalized Petersen graphs, with parameters GPn, 1.
So the Möbius-Kantor graph is one of only seven symmetric Generalized Petersen graphs.
The generalized Petersen graph family was introduced in 1950 by H. S. M. Coxeter and was given its name in 1969 by Mark Watkins.
So the Nauru graph is one of only seven symmetric Generalized Petersen graphs.
More generally, the generalized Petersen graph GP(n, 2) is hypohamiltonian when n is 5(mod 6); the Petersen graph is the instance of this construction with n 5.
Four of the graphs(the two prisms, the Dürer graph, and G(7,2))are generalized Petersen graphs.
The Desargues graph can also be viewed as the generalized Petersen graph G(10,3) or the bipartite Kneser graph with parameters 5,2.
There are several different ways of constructing the Desargues graph: It is the generalized Petersen graph G10, 3.
The generalized Petersen graph G(n, k) is formed by connecting the vertices of a regular n-gon to the corresponding vertices of a star polygon with Schläfli symbol{n/k.
According to this looser definition of a unit distance graph, all generalized Petersen graphs are unit distance graphs Žitnik, Horvat& Pisanski 2010.
As with all generalized Petersen graphs, the Nauru graph can be represented by points in the plane in such a way that adjacent vertices are at unit distance apart; that is, it is a unit distance graph. .
The only known nonplanar uniquely 3-colorable graph is the generalized Petersen graph G(9,2), and it has been conjectured that no others exist.
In graph theory, the generalized Petersen graphs are a family of cubic graphs formed by connecting the vertices of a regular polygon to the corresponding vertices of a star polygon.
As well as its construction as theskeleton of Dürer's solid, it can be obtained by applying a Y-Δ transform to the opposite vertices of a cube graph, or as the generalized Petersen graph G6,2.
It and the prisms are the only generalized Petersen graphs G(n, p) that cannot be so represented in such a way that the symmetries of the drawing form a cyclic group of order n.
Finally, in 2007, David Eppstein used the name Nauru graph because the flag of the Republic of Nauru has a 12-point star similar to the one that appears in the construction of the graph as a generalized Petersen graph.
Castagna& Prins(1972) attribute the proof of Hamiltonicity of a class of generalized Petersen graphs that includes the Dürer graph to a 1968 Ph.D. thesis of G. N. Robertson at the University of Waterloo.
Four generalized Petersen graphs- the 3-prism, the 5-prism, the Dürer graph, and G(7,2)- are among the seven graphs that are cubic, 3-vertex-connected, and well-covered meaning that all of their maximal independent sets have equal size.
Every simple planar cubic graph that is uniquely 3-edge-colorable contains a triangle(Fowler 1998), but W. T. Tutte(1976)observed that the generalized Petersen graph G(9,2) is non-planar, triangle-free, and uniquely 3-edge-colorable.
It can be defined as the generalized Petersen graph G(8,3): that is, it is formed by the vertices of an octagon, connected to the vertices of an eight-point star in which each point of the star is connected to the points three steps away from it.
The method of construction of the Golomb graph as a unit distance graph, by drawing an outer regular polygon connected to an inner twisted polygon or star polygon,has also been used for unit distance representations of the Petersen graph and of generalized Petersen graphs.
The Nauru graph can also be constructed as the generalized Petersen graph G(12, 5) which is formed by the vertices of a dodecagon connected to the vertices of a twelve-point star in which each point of the star is connected to the points five steps away from it.
Every uniquely 3-edge-colorable graph has exactly three Hamiltonian cycles(formed by deleting one of the three color classes) but there exist 3-regular graphs that have three Hamiltonian cycles and are not uniquely 3-colorable,such as the generalized Petersen graphs G(6n+ 3, 2) for n≥ 2.
Outerplanar graphs were first studied and named by Chartrand& Harary(1967),in connection with the problem of determining the planarity of graphs formed by using a perfect matching to connect two copies of a base graph for instance, many of the generalized Petersen graphs are formed in this way from two copies of a cycle graph. .
The seven 3-connected cubic well-covered graphs are the complete graph K4, the graphs of the triangular prism and the pentagonal prism, the Dürer graph, the utility graph K3,3, an eight-vertex graph obtained fromthe utility graph by a Y-Δ transform, and the 14-vertex generalized Petersen graph G7,2.
They include the Petersen graph and generalize one of the ways of constructing the Petersen graph.