Geodesic

Sommaire du Fascicule no. 1

On a model for quantum field theory
p. 1-23
On the rank of Toeplitz matrices
p. 25-37
On systems of functions whose series represent arbitrary measurable functions
p. 39-51
Instability of harmonic capacity and approximations of continuous functions by harmonic functions
p. 53-72
Quasirandom dynamical systems. I. Quasirandom diffeomorphisms
p. 73-128
On a generalized analytic continuation
p. 129-140
A remark on the article ``The existence of spectral functions of generalized second order ifferential systems with boundary conditions at the singular end''
p. 141-145

Sommaire du Fascicule no. 2

The Cauchy problem for equations of the first order with respect to time and with two independent variables
p. 147-158
An apriori estimate for the Holder norm and the Harnack inequality for the solution of a linear parabolic differential equation of second order with discontinuous coefficients
p. 159-176
$s$-capacity and its applications to the study of solutions of a second-order elliptic equation with discontinuous coefficients
p. 177-204
The absence of nonclosed Poisson-stable semitrajectories and trajectories doubly asymptotic to a double limit cycle for dynamical systems of the first degree of structural instability on orientable two-dimensional manifolds
p. 205-219
Aleksandrov--Chekh cohomology and mappings into Eilenberg--Maclane
p. 221-228
Properties of the Green's function for a Sturm--Liouville equation
p. 229-259
Sylow properties of finite groups
p. 261-274
Asymptotics for least deviation of $|x|$
p. 275-290
Estimate for a linear form of logarithms of algebraic numbers
p. 291-307
Letter to the Editor

Sommaire du Fascicule no. 3

Dissipative Volterra operators
p. 311-331
The order of approximation of differentiable functions by certain positive linear operators
p. 333-350
The congruence problem for a unitary group of rank $\ge2$
p. 351-355
Minimal surfaces with certain boundary conditions
p. 357-377
Direct decompositions with distinguished subobjects in categories
p. 379-400
A remark on exponential representation of solutions of differential equations with constant coefficients
p. 401-416
Countable Abelian groups of rank 1
p. 417-428
On a problem of Hanna Neumann
p. 429-432
Connected, complete, locally bounded fields. Complete not locally bounded fields
p. 433-449
Extensions of groups to ring groups
p. 451-474

Sommaire du Fascicule no. 4

Differential criteria for homeomorphism of certain mappings with
p. 475-488
Perfect irreducible mappings and generalized proximities
p. 489-508
Boundary value problems for degenerate quasilinear parabolic
p. 509-532
Dual equivalents of hypercompleteness and paracompactness
p. 533-538
Boundedness of singular integrals in spaces with a weight
p. 539-558
On extension of Cartesian products
p. 559-569
Admissible subgroups of a free product of $\Gamma$-operator groups with
p. 571-584
Periodic solutions of elliptico-parabolic equations
p. 585-598
Metadedekind and metahamiltonian groups
p. 599-616