VertexContract

VertexContract[g,{v1,v2,}]
contracts a collection of vertices v1, v2, into a single vertex of the graph g.

VertexContract[g,{{v1,v2,},}]
contracts several collections of vertices.

VertexContract[{vw,},]
uses rules vw to specify the graph g.

DetailsDetails

  • VertexContract is also known as vertex identification.
  • VertexContract[g,{v1,v2,}] creates a new graph from g by removing all edges between vi and vj and merging them into the single vertex v1.
  • VertexContract works with undirected graphs, directed graphs, multigraphs, and mixed graphs.
Introduced in 2014
(10.0)
| Updated in 2015
(10.3)