Convexity on fuzzy partially ordered sets
In this paper, we generalize a series of research work about convexity on classical partially ordered sets to fuzzy partially ordered sets (L-posets). Taking a complete Heyting algebra as the truth value structure, we propose an L-ordered L-convex structure on an L-poset and give its corresponding L...
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Published in | Journal of intelligent & fuzzy systems Vol. 36; no. 4; pp. 3607 - 3617 |
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Language | English |
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01.01.2019
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Abstract | In this paper, we generalize a series of research work about convexity on classical partially ordered sets to fuzzy partially ordered sets (L-posets). Taking a complete Heyting algebra as the truth value structure, we propose an L-ordered L-convex structure on an L-poset and give its corresponding L-convex hulls. We characterize the L-ordered L-convex sets in terms of four kinds of cut sets of L-subsets, and discuss the product of L-ordered L-convex sets. We also discuss L-convexity-preserving (resp.,L-convex-to-convex) mappings. After that, with a consideration of the degree to which an L-subset is an L-ordered L-convex set, an L-ordered (L, L)-fuzzy convex structure is introduced. The properties such as equivalent descriptions, the product and (L, L)-fuzzy convexity-preserving mappings are analyzed. |
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AbstractList | In this paper, we generalize a series of research work about convexity on classical partially ordered sets to fuzzy partially ordered sets (L-posets). Taking a complete Heyting algebra as the truth value structure, we propose an L-ordered L-convex structure on an L-poset and give its corresponding L-convex hulls. We characterize the L-ordered L-convex sets in terms of four kinds of cut sets of L-subsets, and discuss the product of L-ordered L-convex sets. We also discuss L-convexity-preserving (resp.,L-convex-to-convex) mappings. After that, with a consideration of the degree to which an L-subset is an L-ordered L-convex set, an L-ordered (L, L)-fuzzy convex structure is introduced. The properties such as equivalent descriptions, the product and (L, L)-fuzzy convexity-preserving mappings are analyzed. |
Author | Liu, Hongping Fan, WenPing Wang, Shuang |
Author_xml | – sequence: 1 givenname: Hongping surname: Liu fullname: Liu, Hongping organization: School of Science, Shandong Jianzhu University, Jinan, P.R.China – sequence: 2 givenname: Shuang surname: Wang fullname: Wang, Shuang organization: School of Science, Shandong Jianzhu University, Jinan, P.R.China – sequence: 3 givenname: WenPing surname: Fan fullname: Fan, WenPing organization: School of Surveying and Geo-Informatics, Shandong Jianzhu University, Jinan, P.R.China |
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