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empty graph造句

"empty graph"是什么意思   

例句與造句

  1. The complement graph of a complete graph is an empty graph.
  2. The adjacency matrix of an empty graph is a zero matrix.
  3. On the other hand, the property of being empty is non-trivial, because the empty graph possesses this property, but non-empty graphs do not.
  4. On the other hand, the property of being empty is non-trivial, because the empty graph possesses this property, but non-empty graphs do not.
  5. However, an Eulerian subgraph does not need to be connected; for instance, the empty graph, in which all vertices are disconnected from each other, is Eulerian.
  6. It's difficult to find empty graph in a sentence. 用empty graph造句挺難的
  7. A maximal independent set is either an independent set such that adding any other vertex to the set forces the set to contain an edge or the set of all vertices of the empty graph.
  8. Pitman's proof counts in two different ways the number of different sequences of directed edges that can be added to an empty graph on " n " vertices to form from it a rooted tree.
  9. The graph with no vertices and no edges is sometimes called the " null graph " or " empty graph ", but the terminology is not consistent and not all mathematicians allow this object.
  10. In this proof, Pitman considers the sequences of directed edges that may be added to an " n "-node empty graph to form from it a single rooted tree, and counts the number of such sequences in two different ways.
  11. Alternatively, if one adds randomly selected edges one at a time, starting with an empty graph, then it is not until approximately n / 2 edges have been added that the graph contains a large component, and soon after that the component becomes giant.
  12. One important difference between the circle-based and lune-based " ? "-skeletons is that, for any point set that does not lie on a single line, there always exists a sufficiently large value of " ? " such that the circle-based " ? "-skeleton is the empty graph.
  13. A classic result of graph theory states that a vertex of even degree . ( The statement itself requires zero to be even : the empty graph has an even order, and an isolated vertex has an even degree . ) In order to prove the statement, it is actually easier to prove a stronger result : any odd-order graph has an " odd number " of even degree vertices.
  14. A vector space consists of a set of elements together with an addition and scalar multiplication operation satisfying certain properties generalizing the properties of the familiar real vector spaces; for the cycle space, the elements of the vector space are the Eulerian subgraphs, the addition operation is symmetric differencing, multiplication by the scalar 1 is the identity operation, and multiplication by the scalar 0 takes every element to the empty graph, which forms the additive identity element for the cycle space.

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