Geodesic

Sommaire du Fascicule no. 1

Billiards bounded by arcs of confocal quadrics on the Minkowski plane
p. 1-28
First integrals and asymptotic trajectories
p. 29-54
The distribution of singular points of the sum of a~series of exponential monomials on the boundary of its domain of convergence
p. 55-114
Harmonic analysis on the rank-$2$ value group of a~two-dimensional local field
p. 115-160

Sommaire du Fascicule no. 2

\'Etale monodromy and rational equivalence for $1$-cycles on cubic hypersurfaces in~$\mathbb P^5$
p. 161-200
Integrable billiard systems realize toric~foliations on lens spaces and the 3-torus
p. 201-225
Existence and uniqueness of a~weak solution of an integro-differential aggregation equation on a~Riemannian manifold
p. 226-257
Spectral representations of topological groups and near-openly generated groups
p. 258-274
Symmetries in left-invariant optimal control problems
p. 275-290
Partially invertible strongly dependent $n$-ary operations
p. 291-308

Sommaire du Fascicule no. 3

On the heritability of the Sylow $\pi$-theorem by subgroups
p. 309-335
Global extrema of the Delange function, bounds for digital sums and concave functions
p. 336-372
Multivalued solutions of hyperbolic Monge-Amp\`ere equations: solvability, integrability, approximation
p. 373-421
A~generalized theorem on curvilinear three-web boundaries and its applications
p. 422-454
A~connected compact locally Chebyshev set in a~finite-dimensional space is a~Chebyshev set
p. 455-465
Birational automorphisms of Severi-Brauer surfaces
p. 466-480

Sommaire du Fascicule no. 4

The gradient projection algorithm for a~proximally smooth set and a~function with Lipschitz continuous gradient
p. 481-504
Optimal boundary control of nonlinear-viscous fluid flows
p. 505-520
The wave model of a~metric space with measure and an application
p. 521-538
Boundary behaviour of open discrete mappings on Riemannian manifolds.~II
p. 539-582
Completeness of commutative Sokolov-Odesskii subalgebras and Nijenhuis operators on~$\operatorname{gl}(n)$
p. 583-593
On ergodic flows with simple Lebesgue spectrum
p. 594-615

Sommaire du Fascicule no. 5

Simple closed geodesics on regular tetrahedra in Lobachevsky space
p. 617-642
The Cauchy problem for an abstract second order ordinary differential equation
p. 643-688
The statistical properties of 3D Klein polyhedra
p. 689-708
Kripke semantics for the logic of problems and propositions
p. 709-732
Waring's problem in natural numbers of special form
p. 733-749

Sommaire du Fascicule no. 6

Local infimum and a~family of maximum principles in optimal control
p. 750-785
Sobolev $W^1_p$-spaces on~$d$-thick closed subsets of $\mathbb R^n$
p. 786-837
A~canonical basis of a~pair of compatible Poisson brackets on a~matrix algebra
p. 838-849
Functions with universal Fourier-Walsh series
p. 850-874
Three-webs $W(r,r,2)$
p. 875-899

Sommaire du Fascicule no. 7

Stability of Poiseuille-type flows in an~MHD~model of an incompressible polymeric fluid
p. 901-921
On the derived category of $\mathrm{IGr}(3,8)$
p. 922-955
First-order zero-one law for~the~uniform~model of the random graph
p. 956-966
A~new series of moduli components of rank-2 semistable sheaves on~$\mathbb{P}^{3}$ with singularities of mixed dimension
p. 967-986
An elliptic billiard in a~potential force field: classification of motions, topological analysis
p. 987-1013
Analytic solutions of convolution equations on convex sets in the complex plane with an open obstacle on the boundary
p. 1014-1040
Encodings of trajectories and invariant measures
p. 1041-1064

Sommaire du Fascicule no. 8

Cocompact lattices in locally pro-$p$-complete rank-2 Kac-Moody groups
p. 1065-1079
Waveguide with double threshold~resonance at a~simple threshold
p. 1080-1126
Topological classification of Hamiltonian systems on two-dimensional noncompact manifolds
p. 1127-1158
On $C^m$-reflection of harmonic functions and $C^m$-approximation by harmonic polynomials
p. 1159-1170
Nondiagonal terms in the second moment of automorphic $L$-functions
p. 1171-1189
Approximative properties of sets and continuous selections
p. 1190-1211
Errata

Sommaire du Fascicule no. 9

Stable decomposability of matrices over the rational closure of a~group algebra of an ordered group
p. 1213-1232
Simple tiles and attractors
p. 1233-1266
A~criterion for uniform approximability of individual functions by solutions of second-order homogeneous elliptic equations with constant complex coefficients
p. 1267-1309
Bounded automorphism groups of compact complex surfaces
p. 1310-1322
Operator $E$-norms and their use
p. 1323-1353

Sommaire du Fascicule no. 10

On rigid germs of finite morphisms of smooth surfaces
p. 1354-1381
Optimal position of compact sets and the Steiner problem in spaces with Euclidean Gromov-Hausdorff metric
p. 1382-1398
The problem of distinguishing between a~centre and a~focus in the space of vector fields with given Newton diagram
p. 1399-1446
Topologically projective, injective and flat modules of harmonic analysis
p. 1447-1459
The structure of abnormal extremals in a~sub-Riemannian problem with growth vector $(2, 3, 5, 8)$
p. 1460-1485
Hermite-Pad\'e approximants to the Weyl function and its derivative for discrete measures
p. 1486-1502

Sommaire du Fascicule no. 11

Topological classification of integrable geodesic billiards on quadrics in three-dimensional Euclidean space
p. 1503-1538
On the integral characteristic function of the Sturm-Liouville problem
p. 1539-1550
Extensions of the space of continuous functions and embedding theorems
p. 1551-1567
Limits, standard complexes and $\mathbf{fr}$-codes
p. 1568-1591
Asymptotically sharp two-sided estimate for domains of univalence of holomorphic self-maps of a~disc with an invariant diameter
p. 1592-1611
Vanishing properties of $f$-minimal hypersurfaces in a~complete smooth metric measure space
p. 1612-1622
Asymptotic analysis of solutions of ordinary differential equations with distribution coefficients
p. 1623-1659

Sommaire du Fascicule no. 12

Necessary and sufficient conditions for~extending a~function to a~Schur function
p. 1660-1703
On Weyl multipliers of the rearranged trigonometric system
p. 1704-1736
Renormalized solutions of elliptic equations with~variable exponents and general measure data
p. 1737-1776
Two purity theorems and the Grothendieck-Serre conjecture concerning principal $\mathbf G$-bundles
p. 1777-1794
Proof of a~conjecture of Wiegold for nilpotent Lie algebras
p. 1795-1800