ERRATUM

In the article by G. Karatoprakliev, “On a generalization of Problem T for the equation \(u_{xx}+\operatorname{sign} y\,u_{xx}=0\),” published in Dokl. Akad. Nauk SSSR, vol. 151, no. 6, 1963:

on p. 1273, line 5, where it reads

\[ \operatorname*{arc\,tg}_{(-\pi/2,\ \pi/2)} \frac{\beta(x)}{\alpha(x)}, \]

it should read

\[ \operatorname*{arc\,tg}_{(-\pi/2,\ \pi/2)} \frac{\beta(x)}{\alpha(x)}; \]

on p. 1273, line 11, where it reads

\[ \frac{t}{1-t_1 x}, \]

it should read

\[ \frac{t_1}{1-t_1 x}. \]

T-00384. Signed for printing 29/II–1964. Print run 4975 copies. Order 13.
Paper format 70×108 1/16. Printed sheets 21.0+2 inserts. Paper sheets 7½. Publisher’s sheets 21.7.
2nd Printing House of the Publishing House “Nauka,” Moscow, Shubinsky Lane, 10.