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The article presents a study which proposes a method for finding reductions of partial differential equations with two independent variables. It describes the equations having a laminar stationary flat boundary layer with a pressure gradient. It refers to a problem over the construct of its reduction at a given partial differential equation with two independent variables. It illustrates the form wherein a reduction of the solution to a partial differential equation can be solved through an ordinary differential equation (ODE).

The article offers information on the solution for the torsion problem in Jacobians Jf from the new algorithm in fundamental units calculation of the field Q(x)(square root of f). It mentions that the calculation and existence of the problem was solved in the field K(x)(square root of f), where K is an arbitrary field with char K ≠ 2 and f is a polynomial degree from K[x]. It states that a polynomial f in the Df has a unit of degree m and the subgroup Jf(K) of the Jacobian Jf of the curve Xf that has a torsion point of order m was obtained. It adds that the implementation of the algorithm for a polynomial f with integer coefficients was convenient.