Connectedness of refined Goetschel--Voxman fuzzy matroids

Authors:
Xiao-Nan Li;San-yang Liu;Sheng-gang Li
Affiliations:
Department of Mathematics, Xidian University, 710071 Xi'an, China;Department of Mathematics, Xidian University, 710071 Xi'an, China;College of Mathematics and Information Science, Shaanxi Normal University, 710062 Xi'an, China
Venue:
Fuzzy Sets and Systems
Year:
2010

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Abstract

This paper studies connectedness of Goetschel-Voxman fuzzy matroids (briefly, G-V fuzzy matroids), an analog of connectedness of crisp finite matroids. Based on the results of fuzzy circuits given by Goetschel and Voxman, the transitivity theorem concerning fuzzy circuits of G-V fuzzy matroids is established, and thus the useful notion of refined G-V fuzzy matroid is introduced. The connectedness of refined G-V fuzzy matroids is then defined by using an equivalence relation on the set of all fuzzy points on the ground set, and some expected properties of these G-V fuzzy matroids are presented. Additionally, five kinds of fuzzy matroids are compared.