Geodesic

Sommaire du Fascicule no. 1

Toeplitz operators with radial symbols on Bergman space and Schatten-von Neumann classes
p. 3-26
Fractional boundary value problem on the half-line
p. 27-45
A nonsingular action of the full symmetric group admits an equivalent invariant measure
p. 46-54
On the number of zeros of functions in analytic quasianalytic classes
p. 55-65
An iterative regularization method for a class of inverse boundary value problems of elliptic type
p. 66-85

Sommaire du Fascicule no. 2

On the correlation functions of the characteristic polynomials of real random matrices with independent entries
p. 91-118
On certain geometric properties in Banach spaces of vector-valued functions
p. 119-137
Automorphisms of cellular divisions of $2$-sphere induced by functions with isolated critical points
p. 138-160
Biharmonic Hopf hypersurfaces of complex Euclidean space and odd dimensional sphere
p. 161-173
Certain functions defined in terms of Cantor series
p. 174-189
Ricci solitons of four-dimensional Lorentzian Damek–Ricci spaces
p. 190-199
The 60th Birthday of Iryna Yevgenivna Egorova

Sommaire du Fascicule no. 3

On isometric immersions of the Lobachevsky plane into 4-dimensional Euclidean space with flat normal connection
p. 208-220
An estimation of the length of a convex curve in two-dimensional Aleksandrov spaces
p. 221-227
The dynamics of quantum correlations of two qubits in a common environment
p. 228-262
The space of Schwarz–Klein spherical triangles
p. 263-282
About Pogorelov's method and Aleksandrov's estimates
p. 283-290
Novel view on classical convexity theory
p. 291-311
On the Cauchy–Riemann geometry of transversal curves in the 3-sphere
p. 312-363
On projective classification of points of a submanifold in the Euclidean space
p. 364-371
Biographical sketch of Aleksei Vasilyevich Pogorelov
p. 372-375

Sommaire du Fascicule no. 4

Dissipative extensions of linear relations generated by integral equations with operator measures
p. 381-401
Ricci solitons and certain related metrics on almost co-Kaehler manifolds
p. 402-417
Defocusing nonlocal nonlinear Schrödinger equation with step-like boundary conditions: long-time behavior for shifted initial data
p. 418-453
The existence of solutions to an inhomogeneous higher order differential equation in the Schwartz space
p. 454-459
Remarks on screen integrable null hypersurfaces in Lorentzian manifolds
p. 460-472
On subspace convex-cyclic operators
p. 473-489
Iosif Vladimirovich Ostrovskii (April 6,1934–November 29, 2020) (obituary)
p. 490-492