РЕШЕНИЕ ЗАДАЧИ ∑A ДЛЯ УРАВНЕНИЯ (UXX − UYY) + 2 / (X + γ) × UX = 0

The article deal nith doing a sum ∑a a for the equation of the second order derivatives nhen the coefficient is particular. This equation being an operating one for Uxx doing particular. This equation being an operating one for doing a sum nith a parallax allows to under-stand rts structure. Doing a sum ∑a a nith a parallax is determined to exist and to be the only one under indicated conditions.