WeakComponents[g]
gives a list of all weakly connected components in the undirected graph g.
    
   WeakComponents
WeakComponents[g]
gives a list of all weakly connected components in the undirected graph g.
Details and Options
- WeakComponents functionality is now available in the built-in Wolfram Language function WeaklyConnectedComponents.
 - To use WeakComponents, you first need to load the Graph Utilities Package using Needs["GraphUtilities`"].
 - A weakly connected component of a directed graph is a set of vertices such that for each pair of vertices, there is a path between them. The graph g is considered as undirected.
 
Examples
Basic Examples (2)
This shows that the following graph has two weakly connected components:
WeakComponents has been superseded by WeaklyConnectedComponents:
Tech Notes
Related Guides
- 
    ▪
    
 - Graph Utilities Package ▪
 - 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 (2007), WeakComponents, Wolfram Language function, https://reference.wolfram.com/language/GraphUtilities/ref/WeakComponents.html.
CMS
Wolfram Language. 2007. "WeakComponents." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/GraphUtilities/ref/WeakComponents.html.
APA
Wolfram Language. (2007). WeakComponents. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/GraphUtilities/ref/WeakComponents.html
BibTeX
@misc{reference.wolfram_2025_weakcomponents, author="Wolfram Research", title="{WeakComponents}", year="2007", howpublished="\url{https://reference.wolfram.com/language/GraphUtilities/ref/WeakComponents.html}", note=[Accessed: 04-November-2025]}
BibLaTeX
@online{reference.wolfram_2025_weakcomponents, organization={Wolfram Research}, title={WeakComponents}, year={2007}, url={https://reference.wolfram.com/language/GraphUtilities/ref/WeakComponents.html}, note=[Accessed: 04-November-2025]}