Geodesic

Tome 6 (1970) no. 7

Sommaire

A generalized principle of localization for the Riesz means of a Fourier series in an arbitrary fundamental system of functions of the Laplace operator with discrete spectrum
p. 1143-1158
A generalized principle of localization for the Riesz means that correspond to an arbitrary selfadjoint nonnegative extension of the Laplace operator
p. 1159-1169
Some tests for the absence or uniqueness of limit cycles
p. 1170-1178
Multidimensional transmission systems of generalized processes. I, II
p. 1179-1187
A certain method of investigating separatrices
p. 1188-1199
The essential singularities of the solutions of certain systems of differential equations
p. 1200-1206
The Stokes multipliers for different systems of differential equations. II
p. 1207-1210
A certain application of qualitative methods in the theory of the stability of nonlinear systems
p. 1211-1220
Similarity and homeomorphism of a perturbed and an unperturbed system with block-triangular matrix
p. 1221-1229
Stability in a product of spaces
p. 1230-1234
The stability of linear equations of neutral type
p. 1235-1246
Differential equations with deviating argument dependent on the derivative of the solution, considered in a Banach space with a cone
p. 1247-1256
Oscillations of linear systems with autonomous self-regulating lag
p. 1257-1264
Asymptotics of the width of lacunae in the spectrum of a Sturm–Liouville operator with periodic analytic potential
p. 1265-1272
Regularization of equations with a closed linear operator
p. 1273-1278
An investigation of certain classes of second order quasilinear elliptic equations. II, III
p. 1279-1288
The principle of limiting amplitude for the Cauchy–Poisson problem. III
p. 1289-1297
Remarks on the Kupradze–Aleksidze method
p. 1298-1301
Estimates of weak solutions in $C_{l+\alpha(r)}$ of systems that are elliptic in the sense of Douglis and Nirenberg
p. 1302-1307
The estimation of the domains of nonnegativity of the Cauchy function and its derivatives up to order $n-1$ for an $n$th order ordinary linear differential equation
p. 1308-1310
The stability in the large of the zero solution of certain nonlinear third order differential equations
p. 1311-1313
The stability in the large of the zero solution of certain nonlinear fourth order differential equations
p. 1314-1317
Formulae for the computation of the index of a singular point of the equation $y'=\frac{P_3(x,y)}{Q_3(x,y)}$ in terms
p. 1318-1319
Partial differential equations with involutions
p. 1320-1322
Nearly periodic solutions of a system of Volterra equations
p. 1323-1324
The approximate solution of nonlinear integro-difference equations by the method of averaging functional corrections
p. 1325-1328
An integral estimate of the derivatives of a harmonic function of an $N$-dimensional region in the $L_p$ metric, and some
p. 1329-1332