Dirac and Coulomb notations

The spatial and spin coordinate integrals f are the spinorbitals, p are the orbitals) in the Dirac notation will be denoted with angle brackets () h denotes a one-electron operator and r 2 - the distance between electrons 1 and 2, dFi = dxi dyi dzi, 6V2 = dx2d 2 dz2), for the one-electron integrals  

The integrals over the spatial (only) coordinates will be denoted by round brackets (), for the one-electron integrals  

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