1. Division of Mathematics, Faculty of Engineering, Rajamangala University of Technology Isan, Khon Kaen Campus, Khon Kaen, Thailand
2. Fuzzy Algebras and Decision-Making Problems Research Unit Department of Mathematics, School of Science, University of Phayao, Phayao, Thailand
3. Department of Mathematics, Faculty of Science and Technology, Pibulsongkram Rajabhat University, Phitsanulok, Thailand