Geodesic

Sommaire du Fascicule no. 1

The method of similar operators in the spectral analysis of the Hill operator with nonsmooth potential
p. 1-43
Approximation of functions and their conjugates in variable Lebesgue spaces
p. 44-59
Korobov polynomials of the first kind
p. 60-74
Nontrivial pseudocharacters on groups with one defining relation and nontrivial centre
p. 75-89
Lattice definability of certain matrix rings
p. 90-102
The asymptotic behaviour of the scattering matrix in a~neighbourhood of the endpoints of a~spectral gap
p. 103-156
Existence of two nontrivial solutions for sufficiently large values of the spectral parameter in eigenvalue problems for equations with discontinuous right-hand sides
p. 157-172

Sommaire du Fascicule no. 2

On eigenvalues of a~$\mathscr{P\!T}$-symmetric operator in a~thin layer
p. 173-199
Syzygies of quadratic Veronese embedding
p. 200-222
Simple finite-dimensional right-alternative superalgebras with semisimple strongly associative even part
p. 223-236
Trigonometric polynomial approximation, $K$-functionals and generalized moduli of smoothness
p. 237-254
Necessary and sufficient conditions for the existence and uniqueness of a~bounded solution of the equation $\dfrac{dx(t)}{dt}=f(x(t)+h_1(t))+h_2(t)$
p. 255-268
An estimate for the number of eigenvalues of the Schr\"odinger operator with a~complex potential
p. 269-284
Flexibility of affine horospherical varieties of semisimple groups
p. 285-310

Sommaire du Fascicule no. 3

From the editors of this issue
Convergence of ray sequences of Frobenius-Pad\'e approximants
p. 313-334
Symmetric moment problems and a~conjecture of Valent
p. 335-359
Holomorphic mappings of the unit disc into itself with two fixed points
p. 360-376
Some observations concerning multidimensional quasiconformal mappings
p. 377-398
Makarov's principle for the Bloch unit ball
p. 399-412
Asymptotic Markov inequality on Jordan arcs
p. 413-432
Inequalities for exponential sums
p. 433-464

Sommaire du Fascicule no. 4

Change of bases in the Steenrod algebra $\operatorname{mod} p$
p. 465-478
Extremal networks in $\lambda$-geometry, where $\lambda=3,4,6$
p. 479-509
Rotation of coordinate system and differentiation of integrals with respect to translation-invariant bases
p. 510-530
Simple finite-dimensional right-alternative unital superalgebras with strongly associative even part
p. 531-545
An asymptotic method for homogenization for generalized Beltrami operators
p. 546-567
Construction of a~linear filtration for bundles of rank $2$ on $\mathbf{P}^1_{\mathbb Z}$
p. 568-584

Sommaire du Fascicule no. 5

Relaxation and controllability in optimal control problems
p. 585-619
Baire classes of Lyapunov invariants
p. 620-643
The average length of finite continued fractions with fixed denominator
p. 644-683
Correlation between the norm and the geometry of minimal networks
p. 684-706
Invariants of the Cox rings of double flag varieties of low complexity for exceptional groups
p. 707-742

Sommaire du Fascicule no. 6

From the editorial board of \textit{Matematicheskii Sbornik}
One-bit sensing, discrepancy and Stolarsky's principle
p. 744-763
The universal deformation of the Witt ring scheme
p. 764-790
Rectangular diagrams of surfaces: representability
p. 791-841
Boundary value problems for a~nonlinear elliptic equation
p. 842-862
Discrete uniqueness sets for functions with spectral gaps
p. 863-877
The negative parts of the sums of~sine~series with quasimonotonic coefficients
p. 878-901
Volume growth of quasihyperbolic balls
p. 902-914

Sommaire du Fascicule no. 7

Selections of the metric projection operator and strict solarity of sets with continuous metric projection
p. 915-928
On the rate of convergence as $t\to+\infty$ of the distributions of solutions to the stationary measure for the stochastic system of the Lorenz model describing a~baroclinic atmosphere
p. 929-976
Restriction and induction for supercharacters of finite groups of triangular type
p. 977-991
Calabi-Yau compactifications of toric Landau-Ginzburg models for smooth Fano threefolds
p. 992-1013
Brownian motion on $[0,\infty)$ with linear drift, reflected at zero: exact asymptotics for ergodic means
p. 1014-1048
Steiner minimal trees in small neighbourhoods of points in Riemannian manifolds
p. 1049-1072
On removable singularities of complex analytic sets
p. 1073-1086

Sommaire du Fascicule no. 8

From the editor of this issue
Asymptotic analysis of the parametric instability of nonlinear hyperbolic equations
p. 1088-1112
Bounds for solutions of isothermal equations of viscous gas dynamics
p. 1113-1137
A~one-dimensional model of flow in a~junction of thin channels, including arterial trees
p. 1138-1186
Uniqueness of the renormalized solution of an elliptic-parabolic problem in~anisotropic Sobolev-Orlicz spaces
p. 1187-1206
The Cauchy problem for a~first-order quasilinear equation in the class of Besicovitch almost periodic functions
p. 1207-1224
Conditions for subharmonicity and subharmonic extensions of functions
p. 1225-1245
Stable perturbations of linear differential equations generating a~uniformly bounded group
p. 1246-1259

Sommaire du Fascicule no. 9

Locally standard torus actions and sheaves over Buchsbaum posets
p. 1261-1281
The spectral properties of some nonlinear operators of Sturm-Liouville type
p. 1282-1297
Majorants for eigenvalues of Sturm-Liouville problems with potentials lying in balls of weighted spaces
p. 1298-1311
An approach problem for a~control system with an unknown parameter
p. 1312-1352
Discrete Morse theory for the moduli spaces of polygonal linkages, or solitaire on a~circle
p. 1353-1367
Exceptional collections in surface-like categories
p. 1368-1398
Minimal cubic surfaces over finite fields
p. 1399-1419

Sommaire du Fascicule no. 10

From the editors of this issue
Coadjoint orbits in duals of Lie algebras with admissible ideals
p. 1421-1448
Mapping degrees between spherical $3$-manifolds
p. 1449-1472
Trace theorem for quasi-Fuchsian groups
p. 1473-1502
Laplacians on smooth distributions
p. 1503-1522
Pairs of operators with equal defect from unitarity and their relative index
p. 1523-1534
A~quasiclassical limit of the spectrum of a~Schr\"odinger operator with complex periodic potential
p. 1535-1556
Locally bounded finally precontinuous finite-dimensional quasirepresentations of connected locally compact groups
p. 1557-1576

Sommaire du Fascicule no. 11

From the editor of this issue
Asymptotics of eigenvalues and eigenvectors of Toeplitz matrices
p. 1578-1601
Exploration of Toeplitz-like matrices with unbounded symbols is not a~purely academic journey
p. 1602-1627
On functions of quasi-Toeplitz matrices
p. 1628-1645
Bounding the restricted isometry constants for a~tight frame
p. 1646-1660
Fast matrix multiplication and its algebraic neighbourhood
p. 1661-1704
On Schr\"odinger's bridge problem
p. 1705-1721

Sommaire du Fascicule no. 12

From the editors of this issue
Sign rank versus Vapnik-Chervonenkis dimension
p. 1724-1757
Tight space-noise tradeoffs in computing the ergodic measure
p. 1758-1783
Inverse and stability theorems for approximate representations of finite groups
p. 1784-1817
Irreducible solutions of an equation involving reciprocals
p. 1818-1834
Minimum nonuniform graph partitioning with unrelated weights
p. 1835-1853
Some remarks on sets with small quotient set
p. 1854-1868