6 articles in this issue
P. Bal
There have been various studies on star-Lindelöfness but they always explain it in terms of open coverings. So, we have demonstrated in this study a connection between star-Lindelöfness and the family of closed sets that resembles countable intersection p... see more
D.I. Bezushchak
Matroid is defined as a pair (X,I)(X,\mathcal{I}), where XX is a nonempty finite set, and I\mathcal{I} is a nonempty set of subsets of XX that satisfies the Hereditary Axiom and the Augmentation Axiom. The paper investigates for which semigroups (pr... see more
O.O. Bezushchak
We describe derivations of several important associative and Lie rings of infinite matrices over general rings of coefficients.
A.V. Tushev
Let kk be a field and let NN be a nilpotent minimax torsion-free group acted by a solvable group of operators GG of finite rank. In the presented paper we study properties of some types of GG-invariant ideals of the group ring kNkN.
D. Waghela,S.B. Rao
An attempt is made to introduce and use operational techniques to study about a new sequence of functions containing generalized Jacobi polynomial. Some generating relations, finite summation formulae, explicit representation of a sequence of function S(a... see more