%0 Journal Article %T On the Strongly Hopfian Acts over Semigroups %A Ksenya Anatolyevna Kolesnikova %A Igor Borisovich Kozhukhov %J Applied Mathematics %P 183-189 %@ 2152-7393 %D 2025 %I Scientific Research Publishing %R 10.4236/am.2025.162008 %X We find the necessary and sufficient conditions on a coproduct of connected acts over a semigroup to be strongly hopfian. From this, we deduce the conditions of the strong hopfness for unitary acts over groups. Moreover, we prove that a finite coproduct of strongly hopfian acts over an arbitrary semigroup is strongly hopfian. %K Act Over Semigroup %K Act Over Group %K Strongly Hopfian Act %U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=140654