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Comparative and Allied UP-Filters


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Abstract

The notions of a comparative UP-filter and an allied UP-filter are introduced, and related properties are investigated. Relations between a UP-filter, an implicative UP-filter and a comparative UP-filter are discussed. Conditions for a UP-filter to be a comparative UP-filter are displayed. Conditions for a comparative UP-filter to be an implicative UP-filter are considered. We show that comparative UP-filters and implicative UP-filters coincide in a meet-commutative UP-algebra X satisfying the condition (∀x, y, zX) (x · (y · z) = y · (x · z)). Characterizations of a comparative UP-filter are stated. An extension property for comparative UP-filter is established. Conditions for a UP-filter to be an x-allied UP-filter for given xX are provided.

About the authors

Y. B. Jun

Department of Mathematics Education

Author for correspondence.
Email: skywine@gmail.com
Korea, Republic of, Jinju, 52828

A. Iampan

Department of Mathematics, School of Science

Author for correspondence.
Email: aiyared.ia@up.ac.th
Thailand, Phayao, 56000

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