Kneser graph

A Kneser graph \( K(n, k) \) is a graph defined using the combinatorial structure of sets. Specifically, it is constructed from the set of all \( k \)-element subsets of an \( n \)-element set. The vertices of the Kneser graph correspond to these \( k \)-element subsets, and two vertices (i.e., subsets) are adjacent if and only if the corresponding subsets are disjoint.