Abstract. This work is devoted to give a charcaterization of a pomonoid S such that all cyclic S-posets are regular injective.
Promonoid, Regular injectivity, Cyclic S-poset. Subject Classication: 06F05, 20M30, 20M50. Research of the rst named author was supported by the SRFDP of Ministry of Education of China (20124407120004), the NNSF of China (11171118), and the Progra