All day, every day. Short for "twenty-four hours a day, seven days a week." Another hyphen can be used between "four" and "seven" if used as a modifier before a noun. Often written as 24/7.You know you can call me twenty-four seven if you ever need anything, OK?It's the on...
Two‐point and four‐point graphs appearing in a three‐loop approximation in the field theory renormalization group scheme are calculated in general dimensions. Combining Feynman parameterization and direct integration loop integrals are represented in the form of the expressions, ...
19. Ink rubbing of Chiyou with red bird and dark warrior, Yi’nan, Shandong, second half of the 2nd century AD xiv list of illustrations, maps and tables Fig. 20. Zhenmuping of tomb 5 at Zhangwan, Henan, 2nd century AD Fig. 21. Small lead plates in the form of a man, 2nd ...
By the use of the derived expression for a spherical harmonic expansion, three‐ and four‐center electron‐repulsion integrals with the arbitrary location of Slater‐type orbitals are expressed in terms of overlap integrals and one of the one‐center Coulomb, and ...
The upper bound on the spin‐flip cross section is improved by adding a fourth constraint in a variational calculus. The total cross section, elastic cross section, the forward slope, and the backward slope of the imaginary part of the amplitude form the equality constraints. In addition...
The new correlation energies are tabulated and compared to the Hartree‐Fock values. In the case of the two‐electron systems the new wavefunctions are nearly at the radial limit, accounting for 93&percent; to 97&percent; of the radial correlation error present in the Hartree&...