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Continue to ChatA spectral expansion for Schrödinger operator - https://avesis.ankara.edu.tr/yayin/6b22a9fb-63ad-45da-817e-ee2ed8f803be/a-spectral-expansion-for-schrodinger-operator
A spectral expansion for Schrödinger operator - https://avesis.ankara.edu.tr/yayin/6b22a9fb-63ad-45da-817e-ee2ed8f803be/a-spectral-expansion-for-schrodinger-operator