Sandwich semigroups in locally small categories II: transformations

• Main Authors: Igor Dolinka, Ivana Ɖurđev, James East, Preeyanuch Honyam, Kritsada Sangkhanan, Jintana Sanwong, Worachead Sommanee
• Format: Journal
• Published: 2018
• Subjects: Mathematics
• Online Access: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85052376241&origin=inward; http://cmuir.cmu.ac.th/jspui/handle/6653943832/62768
• Institution: Chiang Mai University

© 2018, Springer Nature Switzerland AG. Fix sets X and Y, and write PTXYfor the set of all partial functions X→ Y. Fix a partial function a: Y→ X, and define the operation ⋆aon PTXYby f⋆ag= fag for f, g∈ PTXY. The sandwich semigroup(PTXY, ⋆a) is denoted PTXYa. We apply general results from Part I to...