on the nowhere simple sets

The paper deals with a study of nowhere simple sets class. The concept of designated sets was introduced by R. Sore in 70-ies of last century and proved that class has very interesting properties. He sowed that every recursively enumerable sets can be split into two disjoint no-where simple sets. Compare with another well-known recursively enumerable sets, the class of nowthere simple sets is less explored. In this paper are given important and interesting results about that class of sets with inte-grated face by various authors

Lecture files: