Geodesic

Tome 9 (1971) no. 6

Sommaire

Expandibility in eigenfunctions of the Laplacian in a~two-dimension region
p. 609-616
The order of approximation of continuous functions by certain linear means of their Fourier series
p. 617-627
Rearrangements of differentiable functions
p. 629-638
Conditions for the imbedding of the function class $W_f^1(G,\,A)$ in the space $C(G)$
p. 639-650
Periodic solutions of evolutionary equations
p. 651-662
A~condition for quasiconformality
p. 663-666
Asymptotic properties of the spectrum of a~differential operator in a~space of vector-valued functions
p. 667-676
The negative part of the spectrum of the operator $(-1)^m\Delta^mu+qu$
p. 677-686
Verbal subgroups of complete direct products of groups
p. 687-692
Linearly ordered rings which are not $o$-epimorphic images of ordered free rings
p. 693-697
Subgroups of general and special linear groups over a~ring
p. 699-708
Level surfaces of a~function defining a~Riemann metric
p. 709-711
Time of the first departure from an~interval for a~continuous homogeneous random walk on a~line
p. 713-721
The infinitely differentiable extension of systems of functions
p. 723-734
Letter to the editor
Letter to the editor