Geodesic

Tome 22 (1986) no. 1

Sommaire

Smoothness of solutions of a problem with an oblique derivative
p. 3-11
On the Cauchy problem for harmonic functions
p. 11-18
A fourth-order evolution equation encountered in underwater acoustics of a stratified fluid
p. 19-25
Boundary value problems for a class of fourth-order equations of mixed type
p. 25-31
Stabilization of means with respect to time of the solution of the Cauchy problem for a singular hyperbolic equation
p. 31-44
Fundamental mixed boundary value problem for elliptic systems in the plane
p. 44-53
The Bitsadze–Samarskiǐ problem for equations of mixed type
p. 54-59
Solvability in the class $L_2$ of the Tricomi problem for a parabolic-hyperbolic equation with a degenerate hyperbolic part
p. 60-66
Boundary value problems for equations of mixed type containing a mixed derivative
p. 66-74
The behavior of eigen- and associated functions of the Schrödinger operator at the point of discontinuity of the potential
p. 74-82
An inequality connected with the solution of a differential equation
p. 82-94
The property of being an unconditional basis on a closed interval of systems of eigen- and associated functions of a quadratic pencil of nonselfadjoint differential operators
p. 94-103
A problem with a normal derivative for an equation of mixed type with nonsmooth lines of degeneracy
p. 103-114
Estimation of spectral density corresponding to an expansion in an $N$-multiple system of exponentials
p. 114-125
Uniform equiconvergence of expansions in a system of exponentials with associated functions, and trigonometric Fourier series
p. 125-134
Fractional powers of a differential operator with singularity
p. 134-142
Asymptotic behavior of solutions of singular integral equations
p. 143-153
Characteristic problem for a class of second-order hyperbolic systems with parabolic degeneration
p. 153-164
An analogue of the Tricomi–Neumann problem for an equation of parabolic-hyperbolic type
p. 165-168
The basis property of a trigonometric system of functions
p. 168-170
The basis property of a system of functions
p. 170-171
A nonlocal problem for partial differential equations
p. 171-174
Approximate solution of two-dimensional Abel type integral equations
A problem of Riemann–Hilbert type for a degenerate elliptic system of first-order equations
p. 176-179