Adolfas Jucys
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Jucys developed the theory of the electronic structure of atoms, formulated in a general form the multiconfiguration Hartree–Fock equations taking into account the correlation effects. He along with his co-workers obtained the first solutions of such equations and applied them in atomic structure calculations, later introduced and developed the extended method of calculation, as well as using non-orthogonal radial orbitals.
Adolfas Jucys with his students developed the mathematical apparatus of many-electron atoms with open shells. The most known work in this field is the monograph, in which the original graphical method for the quantities of the angular momentum theory was presented. In particular, Yutsis graphs (connected simple graphs which can be partitioned into two vertex-induced trees) are named after Adolfas Jucys.
Adolfas Jucys had an interest in the representation theory of Lie groups of different rank, but the Jucys–Murphy elements in the group algebra of the symmetric group are named after his son Algimantas Adolfas Jucys. Provided by Wikipedia
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Published: 1968