Generalized projections in Zn
Anil Khairnar, B. N. Waphare · AKCE International Journal of Graphs and Combinatorics · 2018
We consider the ring Zn (integers modulo n) with the partial order ‘≤’ given by ‘a≤b if either a=b or a≡ab(modn)’. In this paper, we obtain necessary and sufficient conditions for the poset (Zn,≤) to be a lattice.