# grinpy.invariants.disparity.closed_k_disparity¶

grinpy.invariants.disparity.closed_k_disparity(G, k)

Return the closed k-disparity of the graph.

The closed k-disparity of a graph is defined as:



rac{2}{k(k+1)}sum_{i=0}^{k-1}(k-i)d_i

where k is a positive integer and d_i is the frequency of i in the closed disparity sequence.

G : graph
A Networkx graph.
closedKDisparity : float
The closed k-disparity of the graph.

k_disparity