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1956, Volume 40(82), Number 1  


On the spectral function of the operator $-\sum\limits_{i,k=1}^3\dfrac\partial{\partial x_i}[a_{ik}(x_1,x_2,x_3)\dfrac{\partial u}{\partial x_k}]+c(x_1,x_2,x_3)u$
M. Sh. Flekser
3
Characterization of compound singular points of two differential equations by means of rough singular points of closely related systems
N. A. Gubar'
23
On the theory of the second method of A. M. Lyapunov for the investigation of stability
N. N. Krasovskii
57
Some theorems on immersion for rings
A. I. Shirshov
65
On bounded solutions of a certain nonlinear system of ordinary differential equations
B. P. Demidovich
73
On unconditional convergence almost everywhere
P. L. Ul'yanov
95
On the application of the method of finite differences to the solution of the first boundary problem for equations of parabolic type
T. D. Venttsel'
101
On units of algebraic fields of third and fourth degree
K. K. Billevich
123
 
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