Yuriy Ishchuk Department of Algebra and Logic 



November 21, 2017 at 15:05 in Lecture Room 377 
Abstract of talk
The notions of a semicommutative semigroup and an abelian polygon can be introduced by analogy with the notions of semicommutative, abelian modules and rings.
A semigroup is called a semicommutative semigroup if for any implies . A right polygon is called abelian if for any and any any idempotent Using the notions of Baer’s conditions for modules I will introduce p.p.Baer polygons and prove that if is a p.p.Baer polygon, then the conditions for to be a reduced, symmetric, semicommutative and an abelian polygon are equivalent.