Geodesic

Tome 49 (1991) no. 5

Sommaire

An~exact estimate of the second derivative in $l_p$
p. 3-6
Spectra of $p$-elements in the normalizer of an extraspecial linear group
p. 7-15
Spectral projections of hypoelliptic operators
p. 16-25
Smoothly versal deformations of coarse vector fields on a circumference
p. 26-31
Asymptotic approximation of a periodic solution of the second boundary-value problem for systems with small diffusion
p. 32-36
Reduction of nonholonomic variation problems to isoperimetric ones and connections in principal bundles
p. 37-44
A~finiteness criterion for a discrete spectrum of a multidimensional Jacobian matrix
p. 45-53
Complexes of curves and Teichm\"uller spaces
p. 54-61
Self-oscillations of singularly perturbed parabolic systems of first degree of nonroughness
p. 62-69
Ideals in isols containing a set of regressive isols
p. 70-79
Existence and smoothness of the integral of a Hamiltonian system of a certain form
p. 80-85
Asymptotics of the solution of a Dirichlet problem in an angular domain with a~periodically changing boundary
p. 86-96
Congruence functions
p. 97-103
Simplification of dual extremal problems invariant with respect to change in variables
p. 104-109
Nonlinear bang-bang principle in $\mathbf R^n$
p. 110-116
Mean values of multiplicative functions
p. 117-127
Irreducible $J$-decompositions of the Lie algebras $A_{p^n-1}$
p. 128-134
An~inverse problem for an evolution equation
p. 135-141
Cosymmetry, degeneration of solutions of operator equations, and onset of a filtration convection
p. 142-148
A~topological property of the boundary of an analytic subset of a strictly pseudoconvex domain in $C^2$
p. 149-151
The number of solutions of the equation $ax_1x_2+bx_3x_4=N$
p. 151-152
Approximation of the operator of differentiation in a weighted Sobolev class
p. 153-154
Multidimensional Jackson theorem in the $L_2$ space
p. 154-156