Geodesic

Sommaire du Fascicule no. 1

Regular, intra-regular and duo Γ-semirings
p. 3-14
Some properties of meromorphic solutions of logarithmic order to higher order linear difference equations
p. 15-28
Forbidden set of the rational difference equation xn+1=xnxn−k/(axn−k+1+xnxn−k+1xn−k)
p. 29-38
A new characterization of curves in Euclidean 4-space~E4
p. 39-50
Solvability of the boundary value problem for the equation of transition processes in semiconductors with a~fractional time derivative
p. 51-56
On the inverse operations in the class of preradicals of a~module category,~I
p. 57-66
Some homomorphic properties of multigroups
p. 67-76
Stochastic games on Markov processes with final sequence of states
p. 77-94
Application of the fast automatic differentiation for calculation of gradients of material's Bulk modulus and Shear modulus
p. 95-106

Sommaire du Fascicule no. 2

Early history of the theory of rings in Novosibirsk
p. 5-23
Pretorsions in modules and associated closure operators
p. 24-41
Properties of accessible subrings of pseudonormed rings when taking quotient rings
p. 42-53
Radicals and generalizations of derivations
p. 54-65
Some examples of topological modules
p. 66-70
Unrefinable chains when taking the infimum in the lattice of ring topologies for a~nilpotent ring
p. 71-76
On the inverse operations in the class of preradicals of a~module category,~II
p. 77-87
On LCA groups whose ring of continuous endomorphisms satisfies DCC on closed ideals
p. 88-111
The Lyapunov quantities and the center conditions for a~class of bidimensional polynomial systems of differential equations with nonlinearities of the fourth degree
p. 112-130

Sommaire du Fascicule no. 3

Semi-symmetric isotopic closure of some group varieties and the corresponding identities
p. 3-22
Factorizations in the rings of the block matrices
p. 23-33
Inclusion properties of certain subclass of univalent meromorphic functions defined by a~linear operator associated with the λ-generalized Hurwitz--Lerch zeta function
p. 34-50
Interpolating B\'ezier spline surfaces with local control
p. 51-62
A note on the equivalence of control systems on Lie groups
p. 63-73
Viscous flow through a~porous medium filled by liquid with varying viscosity
p. 74-87
Invariant conditions of stability of unperturbed motion governed by some differential systems in the plane
p. 88-106
A note on 2-hypersurfaces of the nearly K\"ahlerian six-sphere
p. 107-114
Post-quantum no-key protocol
p. 115-119
Some estimates for angular derivative at the boundary
p. 120-134