Geodesic

Sommaire du Fascicule no. 1

On the question of extension of multidimensional variational problems
p. 1-19
On $TI$-subgroups of finite groups
p. 21-35
On a~boundary value problem for the time-dependent Stokes system with general boundary conditions
p. 37-66
The number of integers representable as a~sum of two squares on small intervals
p. 67-78
Prime algebras and absolute zero divisors
p. 79-98
Classification of periodic functions and the rate of convergence of their Fourier series
p. 99-132
Approximation of periodic functions of several variables by bilinear forms
p. 133-150
Noncompact absolute extensors in dimension~$n$, $n$-soft mappings, and their applications
p. 151-174
On a~generalization of canonical quantization
p. 175-188
The Radon--Penrose transformation for the group~$SO(8)$, and instantons
p. 189-200

Sommaire du Fascicule no. 2

An estimate of the probability that a~degenerate diffusion process hits a~set of positive measure
p. 201-231
Sharpness and the local Petrovskii condition for strictly hyperbolic operators with constant coefficients
p. 233-273
Quadratic conditions for a~Pontryagin minimum in an optimum control problem linear in the control.~I: A~decoding theorem
p. 275-303
On the conjugacy of Levi factors in finite-dimensional binary-Lie algebras
p. 305-334
Finite linear groups whose algebras of invariants are complete intersections
p. 335-379
On the index of algebras of Cartan type in finite characteristic
p. 381-399
The absence of discrete reflection groups with noncompact fundamental polyhedron of finite volume in Lobachevskii space of large dimension
p. 401-411
Multiple completeness in the sense of M.\,V.~Keldysh of root functions of elliptic boundary value problems with a~polynomial spectral parameter
p. 413-420

Sommaire du Fascicule no. 3

A~theorem on splitting an operator, and some related questions in the analytic theory of perturbations
p. 421-444
Vector rank of commuting matrix differential operators. Proof of S.\,P.~Novikov's criterion
p. 445-465
On a~problem of Sz\'ep
p. 467-495
Analogues of the objects of Lie group theory for nonlinear Poisson brackets
p. 497-527
Inductive and projective topologies. Sufficient sets and representing systems
p. 529-554
Homotopy formulas for the $\overline\partial$-operator on $\mathbf CP^n$ and the Radon--Penrose transform
p. 555-587
Decidability of admissibility in the modal system~$\mathrm{Grz}$ and in intuitionistic logic
p. 589-608
On an almost periodic perturbation on an infinite-dimensional torus
p. 609-623