Bull. Korean Math. Soc. 2008 Vol. 45, No. 3, 437-444 Printed September 1, 2008
Kyoung Ja Lee, Young Bae Jun, and Young Hee Kim Hannam University, Gyeongsang National University, Chungbuk National University
Abstract : As a weak form of a subtraction algebra, the notion of weak subtraction algebras is introduced, and its examples are given. A method to make a weak subtraction algebra from a quasi-ordered set is provided.