the abc of dft by xu

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-2

-1.9

-1.8

-1.7

-1.6

-1.5

-1.4

-1.3

0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2

1d He atom in HF

exactapprox

¬ -2

-1.9

-1.8

-1.7

-1.6

-1.5

-1.4

-1.3

0 2 4 6 8 10

He atom

exactHF

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