2 papers
math.GR2023
On homomorphisms of bicyclic extensions of archimedean totally ordered groups
Oleg Gutik, Oksana Prokhorenkova
Let be the bicyclic extension of a totally ordered group which is defined in [O. Gutik, D. Pagon, and K. Pavlyk, Congruences on bicyclic extensions of a line…
math.GR2022
On endomorphisms of the bicyclic semigroup and the extended bicyclic semigroup
Oleg Gutik, Oksana Prokhorenkova, Diana Sekh
It is proved that the semigroups and of the endomorphisms of the bicyclic semigroup $…