4 papers
math.LO2018
Reversibility of Extreme Relational Structures
Miloš S. Kurilić, Nenad Morača
A relational structure is called reversible iff each bijective homomorphism from onto 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 is called reversible iff every bijective homomorphism is an automorphism. Let 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…
math.NA2015
Characterization of diagonally dominant H-matrices
Nenad Moraca
We first show that sufficient conditions for a diagonally dominant matrix to be a nonsingular one (and also an H-matrix), obtained independently by Shivakumar and Chew in 1974, and…