Geodesic

Sommaire du Fascicule no. 1

On commutativity of connected groups
p. 1-21
Poincar\'e biextension and id\`eles on an algebraic curve
p. 23-36
Geometry of operator cross ratio
p. 37-51
Asymptotic behaviour of a special solution of Abel's equation relating to a cusp catastrophe
p. 53-67
Kolmogorov and trigonometric widths of the Besov classes $B^r_{p,\theta}$ of multivariate periodic functions
p. 69-93
Embedding lattice actions in flows with multidimensional time
p. 95-126
On the rationality of non-singular threefolds with a pencil of Del~Pezzo surfaces of degree~4
p. 127-137

Sommaire du Fascicule no. 2

Families of submanifolds of constant negative curvature of many-dimensional Euclidean space
p. 139-152
Quasi-Weyl asymptotics of the spectrum in the Dirichlet problem
p. 153-171
Closed cross-sections of irrational flows on surfaces
p. 173-192
Weighted estimates for tangential boundary behaviour
p. 193-211
Symplectic slices for actions of reductive groups
p. 213-224
Approximation of non-analytic functions by analytic ones
p. 225-233
Discrete symmetries in the generalized Dido problem
p. 235-257
Zero subsets, representation of meromorphic functions, and Nevanlinna characteristics in a~disc
p. 259-279
Solubility on compact subsets for differential equations with real principal pencil of symbols
p. 281-302

Sommaire du Fascicule no. 3

Estimates for the error of approximation of classes of differentiable functions by Faber--Schauder partial sums
p. 303-314
The Hardy--Littlewood--P\'olya inequality for analytic functions in Hardy--Sobolev spaces
p. 315-334
Birationally rigid varieties with a~pencil of Fano double covers.~III
p. 335-368
The matrix analogue of the Blackwell renewal theorem on the real line
p. 369-386
Factoriality of nodal three-dimensional varieties and connectedness of the locus of log canonical singularities
p. 387-414
Separation properties for closures of toric orbits
p. 415-432
Approximation properties of mixed series in terms of Legendre polynomials on the classes~$W^r$
p. 433-452
Weak and strong continuity of representations of topologically pseudocomplete groups in locally convex spaces
p. 453-473

Sommaire du Fascicule no. 4

Discrete spectrum of an asymmetric pair of waveguides coupled through a~window
p. 475-504
Estimates of derivatives of simplest fractions and other questions
p. 505-524
Deficiency indices and spectrum of self-adjoint extensions of some classes of differential operators
p. 525-546
On the topological classification of Lorenz-type attractors
p. 547-593
The Maxwell set in the generalized Dido problem
p. 595-621
Ascending chain condition for the set of canonical thresholds of toric varieties
p. 623-631

Sommaire du Fascicule no. 5

Variational principles for the spectral radius
p. 633-680
Almost free action of the one-dimensional torus
p. 681-703
Branching extremals of the functional of $\lambda$-normed length
p. 705-726
Isentropic solutions of quasilinear equations of the first order
p. 727-752
Asymptotic behaviour of supports of solutions of
p. 753-790

Sommaire du Fascicule no. 6

Properties of exponential series with
p. 791-811
Properties of series of exponentials whose exponents satisfy to
p. 813-833
Asymptotic solution of a Cauchy problem in a neighbourhood
p. 835-851
The buffer property in a non-classical hyperbolic
p. 853-885
Quadratic forms of projective spaces over rings
p. 887-899
Complete description of the Maxwell strata in the
p. 901-950

Sommaire du Fascicule no. 7

Projective geometry of systems of second-order differential equations
p. 951-975
A~generalization of the concept of sectorial operator
p. 977-995
Structure theorems for Ricci-semisymmetric submanifolds
p. 997-1024
Approximation of functions in $H^p$, $0$,
p. 1025-1035
Direct and inverse theorems on approximation by root
p. 1037-1083
Indices of 1-forms, intersection indices, and Newton polyhedra
p. 1085-1108

Sommaire du Fascicule no. 8

Discrete Torelli theorem
p. 1109-1120
Approximation of function classes in spaces with mixed
p. 1121-1144
Schur flows and orthogonal polynomials on the unit circle
p. 1145-1165
Inequalities for critical values of
p. 1167-1176
Deficiency numbers of symmetric operators generated
p. 1177-1203
Support of the extremal measure in a vector equilibrium
p. 1205-1221
Hyperbolic Monge--Amp\`ere systems
p. 1223-1258

Sommaire du Fascicule no. 9

Monotone path-connectedness of Chebyshev sets in the space~$C(Q)$
p. 1259-1272
Localization of the extended stochastic integral
p. 1273-1295
Spectrum of the Laplace--Beltrami operator on
p. 1297-1308
Uniqueness of Steiner minimal trees on boundaries
p. 1309-1340
Lagrangian asymptotic behaviour of solutions of inhomogeneous systems
p. 1341-1351
Best approximation problems
p. 1353-1364
On~the controllers of prime ideals of group algebras of~Abelian torsion-free groups of~finite rank over a~field of positive
p. 1365-1404

Sommaire du Fascicule no. 10

Singular points of meromorphic functions defined by their expansion
p. 1405-1416
Minkowski sum of a parallelotope and a segment
p. 1417-1433
Continuous dependence on parameters of solutions to
p. 1435-1457
Semiampleness theorem for weak log Fano varieties
p. 1459-1465
Basis properties of a spectral
p. 1467-1487
$SQ$-universality of one-relator relative presentations
p. 1489-1508
Periodic functions on a free semigroup
p. 1509-1528
Dyadic wavelets and refinable functions on~a~half-line
p. 1529-1558

Sommaire du Fascicule no. 11

Representation of the Green's function of~Schr\"odinger's
p. 1559-1568
Self-similar functions in $L_2[0,1]$ and the
p. 1569-1586
$A$-Solutions with singularities as almost solutions
p. 1587-1605
Perturbations of Jacobi polynomials
p. 1607-1633
Method of orbit sums in the theory of
p. 1635-1667
Integral operators with kernels that are discontinuous on
p. 1669-1696
Dynamical systems with low recurrence rate
p. 1697-1712

Sommaire du Fascicule no. 12

Physical interpretation of certain ruled surfaces in $E^3$ by means of motion of point charge
p. 1713-1721
Discontinuous gradient differential equations and trajectories in calculus of variations
p. 1723-1751
Additional parameters in inverse problems of monodromy
p. 1753-1773
Estimates of the Nash--Aronson type for the diffusion equation with non-symmetric matrix and
p. 1775-1804
On the Ul'yanov problem
p. 1805-1826
Triangulated categories of singularities and equivalences between Landau--Ginzburg models
p. 1827-1840
Quantum versions of vector quality and exponential law in the frame-work of the non-matricial approach
p. 1841-1863