Geodesic

Volume 21 (1985) no. 4

Sommaire

The averaging method in the theory of perturbations of linear differential operators
p. 555-562
The direction vector method for investigating the stability of singular points of nonlinear systems. I. Theory
p. 562-572
The behavior of solutions of a quasihomogeneous system in the neighborhood of a nonsimple exceptional direction
p. 572-581
Kneser solutions
p. 581-588
Oscillatory properties of a class of differential equations with deviating argument
p. 588-596
Synthesis of optimal control for systems described by a hyperbolic equation
p. 597-604
Nonlocal problems in the theory of optimal processes. I
p. 605-614
Perturbation of invariant manifolds. I
p. 615-623
Controllability of time-dependent linear systems
p. 623-628
Sufficient conditions for optimality of control of an ensemble of trajectories of nonlinear dynamical systems
p. 628-636
Trace formulas for a singular differential operator with a turning point
p. 636-646
Construction of analytic functions that conformally map a half plane onto circular polygons
p. 646-656
Simplest types of ordering in open dissipative systems
p. 657-668
Selfadjointness in essentially semibounded higher-order elliptic operators
p. 668-677
A generalization of the characteristic problem for hyperbolic systems
p. 678-686
On the theory of parabolic pseudodifferential operators of variable order
p. 686-694
Determination of the parameter of an evolution equation and inverse problems of mathematical physics.~II
p. 694-701
Solvability of elliptic problems with boundary conditions of Bitsadze--Samarski{\v\i} type
p. 701-706
Asymptotic behavior with respect to the parameter of the solution of a higher-order elliptic equation in a neighborhood of the line of degeneracy of the limit equation
p. 706-715
A boundary value problem with a matrix parameter
p. 716-717
Analytic solution of a static boundary value problem of the plane theory of elasticity
p. 717-720
Some cases of the integrability of differential equations of the form $y''+p(x)y'+h(x)y+f(x)F(y,k(x))=0$
p. 720-724
Some properties of modified Kontorovich--Lebedev integral transformations
p. 724-727
Some criteria for discreteness of the negative part of the spectrum of a linear differential operator
p. 728-731