Contract[g,{x,y}]
gives the graph resulting from contracting the pair of vertices {x,y} of graph g.


Contract
Contract[g,{x,y}]
gives the graph resulting from contracting the pair of vertices {x,y} of graph g.
Details and Options
- Contract functionality is now available in the built-in Wolfram Language function VertexContract.
- To use Contract, you first need to load the Combinatorica Package using Needs["Combinatorica`"].
Tech Notes
Related Guides
-
▪
- Constructing Graphs ▪
- Graphs & Networks ▪
- Graph Visualization ▪
- Computation on Graphs ▪
- Graph Construction & Representation ▪
- Graphs and Matrices ▪
- Graph Properties & Measurements ▪
- Graph Operations and Modifications ▪
- Statistical Analysis ▪
- Social Network Analysis ▪
- Graph Properties ▪
- Mathematical Data Formats ▪
- Discrete Mathematics
Text
Wolfram Research (2012), Contract, Wolfram Language function, https://reference.wolfram.com/language/Combinatorica/ref/Contract.html.
CMS
Wolfram Language. 2012. "Contract." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/Combinatorica/ref/Contract.html.
APA
Wolfram Language. (2012). Contract. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/Combinatorica/ref/Contract.html
BibTeX
@misc{reference.wolfram_2025_contract, author="Wolfram Research", title="{Contract}", year="2012", howpublished="\url{https://reference.wolfram.com/language/Combinatorica/ref/Contract.html}", note=[Accessed: 14-August-2025]}
BibLaTeX
@online{reference.wolfram_2025_contract, organization={Wolfram Research}, title={Contract}, year={2012}, url={https://reference.wolfram.com/language/Combinatorica/ref/Contract.html}, note=[Accessed: 14-August-2025]}