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math.AP2023
Lower bound for solutions to the secular equation in a direct sum of the Sobolev spaces of divided regions
Sohei Ashida
In this paper a lower bound for solutions to the secular equation of the Schrödinger equation with basis functions discontinuous on boundaries of divided regions is given. If the f…
math-ph2023
Critical points of the discretized Hartree-Fock functional of connected molecules preserving structures of molecular fragments
Sohei Ashida
In this paper a method to obtain a critical point of the discretized Hartree-Fock functional from an approximate critical point is given. The method is based on Newton's method on…