Volume 21, Issue 2, March–April, 1969
ISSN:
00415995 (Print)
15739376 (Online)
In this issue (16 articles)

OriginalPaper
Investigation of groups with given properties of the subgroups
S. N. Chernikov Pages 160172 
Brief Communications
The RiemannHilbert boundaryvalue problem for holomorphic functions of several complex variables
M. A. Borodin Pages 198205 
Brief Communications
The periodic solution of a linear inhomogeneous differential equation
N. I. Ronto Pages 223225 
Brief Communications
A theorem on homeomorphisms for an elliptic differential expression and pseudodifferential boundary conditions
S. O. Rushchitskaya Pages 226230 
Brief Communications
Equivalence of some statements of the inverse problem for the Schrödinger equation
M. A. Rybak Pages 231232 
Brief Communications
Introduction of a class of pindecomposable positive operators in Banach space
V. S. Ten Pages 233235 
Brief Communications
Principal primary ideals of the ring of functions which are regular in a circle and differentiable on its boundary
L. V. Shamraeva Pages 236238 
Chronicles
The work of the Sixth Mathematical School
D. V. Gusak, A. N. Demenin, V. S. Korolyuk Page 239
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