(Semi)topological BL-algebra; prenorm; norm; premetric; metric space
Issue Date
2019-11
Publisher
IOS PRESS
Citation
JOURNAL OF INTELLIGENT & FUZZY SYSTEMS, v. 37, no. 5, Page. 6959-6969
Abstract
In this paper we define the notions of a norm and a prenorm on BL-algebras and we give some methods for constructing them. We introduce (pre)metrics on BL-algebras and find some connections between them and (pre)norms. Using prenorms, we find some conditions that a BL-algebra become a metric space. Finally, we show that if there exists a prenorm on a BL-algebra A, then for any filter Fin A, there are topologies U and Von A and on A/F respectively such that (A, U) and (A / F, V) are (semi)topological BL-algebras.