# Triangle k Core

Jump to navigation
Jump to search

The triangle k core, or k truss has been intoduced by Cohen (NSA Tech. Report 2008) and Zhang and Parthasarathy (ICDE 2012) independently and runs in time, where is the maximum degree and the number of edges.

### Definition Triangle Core

The triangle k-core of a simple undirected graph is the inclusion maximal subgraph where each edge is part of at least triangles in .

More detailed background information is provided in

- Cohen, Jonathan. "Trusses: Cohesive subgraphs for social network analysis." National Security Agency Technical Report (2008).
- Zhang, Yang, and Srinivasan Parthasarathy. "Extracting analyzing and visualizing triangle k-core motifs within networks." In Data Engineering (ICDE), 2012 IEEE 28th International Conference on, pp. 1049-1060. IEEE, 2012.

### Definition Triangle Core Number

The triangle core number of an edge is the maximal k such that