This can construct the tight-binding model and calculate energies

An easy to use Flux implementation of the Kolmogorov Arnold Network. This is a Julia version of TorchKAN.

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The Reduced-Shifted Conjugate-Gradient Method method to calculate the element of the Green's function matrix. See, Y. Nagai, Y. Shinohara, Y. Futamura, and T. Sakurai,[arXiv:1607.03992v2 or DOI:10.7566/JPSJ.86.014708]. http://dx.doi.org/10.7566/JPSJ.86.014708