Geodesic

Volume 32 (1996) no. 1

Sommaire

On a scheme for studying cycles of nonlinear systems
p. 3-8
Some properties of root functions of differential operators that are connected with the unconditional basis property
p. 9-14
The curve of separatrix cycles of an autonomous quadratic system in the plane. The case of two anti-saddles
p. 15-21
Some estimates for root functions of a matrix differential operator with a diagonal-matrix eigenvalue
p. 22-31
An estimate, uniform on the whole line $\mathbb R$, for the rate of convergence of a spectral expansion corresponding to the Schr\"odinger operator with a summable potential
p. 32-36
On necessary and sufficient conditions for the basis property of systems of root functions of a differential operator
p. 37-43
The potential method in a linear time-optimality problem
p. 44-51
Singular Cauchy problems for singularly perturbed systems of nonlinear ordinary differential equations. I
p. 52-61
Distribution of eigenvalues for uniformly minimal systems of root functions of ordinary differential operators
p. 62-70
On the rate of convergence of biorthogonal series connected with second-order differential operators
p. 71-82
On the convergence of Riesz means of spectral expansions that correspond to the Schr\"odinger operator with a singular potential
p. 83-89
The generalized Fourier method for solving mixed problems for nonlinear equations
p. 90-100
On the semidiscretization method in the problem of periodic solutions of quasilinear autonomous parabolic equations
p. 101-106
On some problem of the reconstruction of a boundary condition for a parabolic equation.~I
p. 107-116
On the differential properties of expansions in a system of sines and cosines
p. 117-126
On the construction of solutions of linear difference systems with continuous time
p. 127-128
On a method for solving a form of integral equations of the first kind
p. 129-130
On solutions, bounded on the half-axis, of nonlinear differential equations
p. 131-132
On a boundary value problem for the Schr\"odinger operator with a complex potential
p. 133-134
On the expansion of the solution of the generalized Gellerstedt problem in a biorthogonal series
p. 135-137
On a connection between the solutions of a linear differential equation and solutions of a conjugate equation
p. 138-139