Perturbation treatment of the Hartree–Fock equations for the ground states of the boron-like ions
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The first-order Hartree–Fock and unrestricted Hartree–Fock equations for the ground state of a five electron atomic system are solved exactly. The solutions are used to evaluate the corresponding second-order energies exactly and the third-order energies with great accuracy. The first-order terms in the expectation values of 1/r, r, r2, and δ(r) are also calculated.
The "third"-order barrier for technology-integration instruction: Implications for teacher education
2012 ◽
Vol 28
(6)
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2017 ◽
Vol 2017
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pp. 1-12
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1910 ◽
Vol 29
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pp. 41-64
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2018 ◽
Vol 48
(6)
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pp. 611-620
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