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1973, Volume 9, Number 1  


Всесоюзный симпозиум по избранным вопросам уравнения с частными производными
A. M. Nakhushev
3–4

Partial Differential Equations
A certain problem for the Tricomi equation
M. Kh. Abregov
5–17
The solutions of elliptic equations that are degenerate on the boundary of the domain
D. K. Gvazava
18–24
Natural differential operators and the separation of variables
A. A. Dezin
25–31
Well-posed boundary value problems for equations of mixed-composite type
T. D. Dzhuraev, U. Rakhmanov
32–40
The Holmgren problem for a certain equation with singular coefficients
V. I. Evsin
41–48
Conditions for the convergence of spectral decompositions that correspond to selfadjoint extensions of elliptic operators. IV. Theorems of negative type for an arbitrary extension of a general second order selfadjoint elliptic operator
V. A. Il'in
49–73
An inverse problem of potential theory for the string equation
V. M. Isakov
74–83
The characteristic Cauchy problem for a certain class of degenerate hyperbolic equations
T. Sh. Kal'menov
84–96
Smoothness of the solutions of the generalized Tricomi problem
V. V. Kovrizhkin
97–105
Certain boundary value problems with a shift for the Lavrent'ev–Bicadze equation
S. K. Kumykova
106–114
Certain problems for equations of hyperbolic and mixed types
T. I. Lanina
115–122
Certain singular boundary value problems for an equation of Fuchs class in a space of generalized functions
I. P. Leskovsky
123–129
The correct formulation of boundary value problems for parabolic equations with a characteristic form of variable sign
A. M. Nakhushev
130–135
A certain class of integral equations of the first kind
A. I. Prilepko
136–141
Certain boundary value problems for a certain class of equations of mixed type
M. S. Salakhitdinov, A. Tolipov
142–148
The asymptotic behavior of the solutions of a certain problem with a discontinuous nonlinearity
V. B. Smirnova
149–157
Energy relations for multidimensional equations of mixed type
N. G. Sorokina
158–161

Short Communications
A certain boundary value problem with a shift
Kh. G. Bzhikhatlov
162–165
A certain class of elliptic equations that degenerate on the boundry
V. A. Bryukhanov
166–168
A certain equation of mixed-composite type
V. N. Vragov
169–171
Certain boundary value problems for a multi-dimensional equation of mixed type
V. P. Didenko
172–174
Critical points of the harmonic Green's function for the exterior of a domain that is homeomorphic to a ball
V. I. Ermakov
175–176
A certain equation whose order degenerates along the curve of type change
M. M. Zainulabidov
177–179
Solvability of the Dirichlet problem in the spaces $C^{(\alpha)}(G)$ and $L_q^{(\alpha)}(G)$
I. M. Karasev
180–182
The Cauchy problem for a certain class of fourth order equations
I. N. Lanin
183–185
The Cauchy problem for a degenerate hyperbolic equation
N. A. Lar'kin
186–188
Series in powers of one variable that satisfy partial differential equations
A. I. Yanushauskas
189–191

Letters to the Editor
Letters to the editors
A. M. Kamachkin
192
Letter to the editors ("The existence of families of periodic solutions of a system of $n$ second order differential equations in the resonance case", Differencial'nye Uravnenija 5 (1969), 1984–1989)
I. A. Pasynkova
192
 
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