ЗМІСТ

Volodymyr Kyrychenko (17.06.1942 - 02.04.2019)

Ahmed T., Caballero J.M.R.
A family of doubly stochastic matrices involving Chebyshev polynomials

Banakh T.O., Gavrylkiv V.M.
Automorphism groups of superextensions of finite monogenic semigroups

Bhat M.A., Naikoo T.A., Pirzada S.
On cospectral signed digraphs

Bondarenko V.M., Styopochkina M.V.
The classification of serial posets with the non-negative quadratic Tits form being principal

Castro F., Quadros G.
Globalizations for partial (co)actions on coalgebras

Dzhaliuk N.S., Petrychkovych V.M.
Solutions of the matrix linear bilateral polynomial equation and their structure

Fotue-Tabue A., Mouaha C.
On the lattice of cyclic codes over finite chain rings

Jahanbakhsh N., Nikandish R., Nikmehr M.J.
On the inclusion ideal graph of a poset

Koruoğlu Ö., Meral T., Sahin R.
Commutator subgroups of the power subgroups of generalized Hecke groups

Yashchuk V.S.
On some Leibniz algebras, having small dimension