Nenad Morača

collaborators

3 papers

math.LO2018

Reversibility of Extreme Relational Structures

Miloš S. Kurilić, Nenad Morača

A relational structure $X$ is called reversible iff each bijective homomorphism from $X$ onto $X$ is an isomorphism, and linear orders are prototypical e…

math.LO2017

Reversible Disjoint Unions of Well Orders and Their Inverses

Miloš S. Kurilić, Nenad Morača

A poset $P$ is called reversible iff every bijective homomorphism $f : P \to P$ is an automorphism. Let $W$ and ${\mathcal{W}} ^*…

math.LO2017

Reversibility of Disconnected Structures

Miloš S. Kurilić, Nenad Morača

A relational structure is called reversible iff every bijective endomorphism of that structure is an automorphism. We give several equivalents of that property in the class of disc…