Примеры использования Double cover на Английском языке и их переводы на Русский язык
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Strong 2-way-front-zipper under double cover molding.
The double cover acts on a 28-dimensional lattice over the Gaussian integers.
It featured rappers Jay-Z andMaster P on a double cover.
The bipartite double cover of the Petersen graph is the Desargues graph: K2× G(5,2) G10,3.
However, the icosahedron is not bipartite,so it is not the bipartite double cover of K6.
In particular, the bipartite double cover of the graph of a tetrahedron, K4, is the graph of a cube.
Duncan(2006) used the 28-dimensional lattice to construct a vertex operator algebra acted on by the double cover.
Double cover for collecting froth from the starch and steam vent, it takes up very little space.
A collection of cycles satisfying the condition of the cycle double cover conjecture is called a cycle double cover.
A double cover in graph theory can be viewed as a special case of a topological double cover. .
In general, a graph may have multiple double covers that are different from the bipartite double cover.
Since a square of such an endomorphism defines an Inoue surface of type S+,an Inoue surface of type S- has an unramified double cover of type S.
The map Spin(3)→ SO(3) is the double cover of the rotation group by the spin group in 3 dimensions.
The symmetric group on five points is also the symmetry group of the Petersen graph, andthe order-2 subgroup swaps the vertices within each pair of vertices formed in the double cover construction.
In particular the bipartite double cover of G is connected if and only if G is connected and nonbipartite.
Some graphs such as cycle graphs and bridgeless cactus graphs can only be covered by using the same cycle more than once,so this sort of duplication is allowed in a cycle double cover.
The bipartite double cover is a special case of a double cover a 2-fold covering graph.
In geometry, the pencil of rays emanating from a point in the oriented plane is a double cover of the pencil of unoriented lines passing through the same point.
The graph C is a double cover(or 2-fold cover or 2-lift) of H: the preimage of each node in H has size 2.
Instead, it can be obtained as the orientable double cover of an embedding of K6 on the projective plane.
SO(4) has a double cover called Spin(4) in much the same way that Spin(3) is the double cover of SO3.
The tensor product G× K2is a bipartite graph, called the bipartite double cover of G. The bipartite double cover of the Petersen graph is the Desargues graph: K2× G(5,2) G10,3.
The bipartite double cover of any graph G is a bipartite graph; both parts of the bipartite graph have one vertex for each vertex of G. A bipartite double cover is connected if and only if G is connected and non-bipartite.
For instance, the Desargues graph is not only the bipartite double cover of the Petersen graph, but is also the bipartite double cover of a different graph that is not isomorphic to the Petersen graph.
The bipartite double cover may also be constructed using adjacency matrices(as described below) or as the derived graph of a voltage graph in which each edge of G is labeled by the nonzero element of the two-element group.
In graph-theoretic mathematics, a cycle double cover is a collection of cycles in an undirected graph that together include each edge of the graph exactly twice.
The bipartite double cover of a complete graph Kn is a crown graph a complete bipartite graph Kn, n minus a perfect matching.
As a hyperelliptic Riemann surface, it arises as the ramified double cover of the Riemann sphere, with ramification locus at the six vertices of a regular octahedron inscribed in the sphere, as can be readily seen from the equation above.
The bipartite double cover of an odd-length cycle graph is a cycle of twice the length, while the bipartite double of any bipartite graph(such as an even length cycle, shown in the following example) is formed by two disjoint copies of the original graph.
In the following figure, the graph C is a double cover of the graph H: The graph C is a covering graph of H: there is a surjective local isomorphism f from C to H, the one indicated by the colours.