Decomposition of Functions of Finite Analytical ComplexityFunctions of two variables can be obtained from
functions of one variable by substitutions
Pseudo-differential operators on manifolds with a singular boundary pseudo-
differential operators acting in
functional spaces on such manifolds. Fredholm properties
On describing bound states for a spin 1 particle in the external Coulomb fieldOvsiyuk, E. M.,
Veko, O. V.,
Voynova, Ya. A.,
Koral’kov, A. D.,
Kisel, V. V.,
Кисель, В. В.,
Red’kov, V. M. separated of 2-nd order system of
differential equations for three radial
functions. In particular, one