G. Karatoprakliev, “A modified $\mathrm{T}_1$ problem for the equation $u_{xx}+\operatorname{sign}yn u_{yy}=0$”, Dokl. Akad. Nauk SSSR, 1963, Volume 150, Number 1,Pages 23

MATHEMATICS

A modified $\mathrm{T}_1$ problem for the equation $u_{xx}+\operatorname{sign}yn u_{yy}=0$

G. Karatoprakliev

Institute of Mathematics and Informatics, Bulgarian Academy of Sciences

Presented: M. A. Lavrent'ev
Received: 06.10.1962