## Application of generalized analytic functions on Riemann surfaces to the investigation of G-deformations of two-dimensional surfaces in E 4.(Russian)Zbl 0654.53005

Generalized analytic functions are applied for the investigation of deformations which preserve the Grassmannian image of a two-dimensional orientable surface F of negative curvature with compact boundary $$\partial F$$ (if it exists) in $$E_ 4$$. The main step of this investigation are theorems (proved in § 4) about the number of linearly independent solutions and the solvability of the boundary value problems of Markushevich and Hilbert for generalized analytic functions on noncompact Riemannian surfaces.
Reviewer: St.Hineva

### MSC:

 53A07 Higher-dimensional and -codimensional surfaces in Euclidean and related $$n$$-spaces 26E05 Real-analytic functions
Full Text: