Partitioning Inverse Monte Carlo Iterative Algorithm for Finding the Three Smallest Eigenpairs of Generalized Eigenvalue Problem

Table 2

The solution when the number of chains increases.

Number of chains	Calculated eignvalues
𝑁	Exact 𝜆^1(1)=.74529395	Exact 𝜆^1(2)=.85537131	Exact 𝜆^1(3)=.91032740
20	.74737713	.85513704	.91008238
40	.74529979	.85537157	.91034304
80	.74529407	.85537175	.9102873