ЗМІСТ

Asashiba H., Kimura M.
Derived equivalence classification of generalized multifold extensions of piecewise hereditary algebras of tree type

Catarino P., Higgins P.M., Levi I.
On inverse subsemigroups of the semigroup of orientation-preserving or orientation-reversing transformations

Guédénon T.
Projectivity and flatness over the graded ring of normalizing elements

Kamalian R.R.
On one-sided interval edge colorings of biregular bipartite graphs

Karimi F.
On the cotypeset of torsion-free abelian groups

Kim D.S.
Recursive formulas generating power moments of multi-dimensional Kloosterman sums and m-multiple power moments of Kloosterman sums

Mahmood R.M.S.
On fibers and accessibility of groups acting on trees with inversions

Chella Pandian P., Durairajan C.
On various parameters of Zq-simplex codes for an even integer q

Petrenko O.V., Protasov I.V.
Ultrafilters on G-spaces

Ning Su, Yanming Wang
On c-normal and hypercentrally embeded subgroups of finite groups

Ungor B., Kurtulmaz Y., Halicioglu S., Harmanci A.
Symmetric modules over their endomorphism rings

Zabavsky B., Gatalevych A.
A commutative Bezout PM* domain is an elementary divisor ring

Zhuravlev D.
Towards practical private information retrieval from homomorphic encryption