The issue devoted to the 60th anniversary of the birth of Igor Volodymyrovych Protasov

ЗМІСТ

Igor Volodymyrovych Protasov (dedicated to 60-th Birthday)

Banakh T., Gavrylkiv V.
Characterizing semigroups with commutative superextensions

Banakh T., Protasov I., Slobodianiuk S.
Densities, submeasures and partitions of groups

Benli M.G., Grigorchuk R.
On the condensation property of the Lamplighter groups and groups of intermediate growth

Bier A., Sushchanskyy V.
Dense subgroups in the group of interval exchange transformations

Bondarenko I.
The word problem in Hanoi Towers groups

Gutik O., Pozdnyakova I.
On monoids of monotone injective partial selfmaps of L_n × _lexZ with co-finite domains and images

Kucab Ja., Zarichnyi M.
Subpower Higson corona of a metric space

Leshchenko Yu., Sushchansky V.
On the group of unitriangular automorphisms of the polynomial ring in two variables over a finite field

Novikov B.V.
Non-commutative Grillet semigroups

Tomaszewski W.
The algorithms that recognize Milnor laws and properties of these laws