Interval Cut-Set of Generalized Interval-Valued Intuitionistic Fuzzy Sets

Interval Cut-Set of Generalized Interval-Valued Intuitionistic Fuzzy Sets

Amal Kumar Adak, Monoranjan Bhowmik, Madhumangal Pal
Copyright: © 2012 |Pages: 16
DOI: 10.4018/ijfsa.2012070103
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Abstract

In this paper, some different types of interval cut-set of genaralized interval-valued intuitionistic fuzzy sets (GIVIFSs), complement of these cut-sets are introduced. Some properties of those cut-set of GIVIFSs are investigated. Also three decomposition theorems of GIVIFSs are obtained based on the different cut-set of GIVIFSs. These works can also be used in setting up the basic theory of GIVIFSs.
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Preliminaries

In this section, the concept of interval arithmetics are recalled. Let ijfsa.2012070103.m05 be the set of all closed subintervals of the interval ijfsa.2012070103.m06. An interval on ijfsa.2012070103.m07, say ijfsa.2012070103.m08, is a closed subinterval of ijfsa.2012070103.m09 i.e., ijfsa.2012070103.m10 where ijfsa.2012070103.m11 and ijfsa.2012070103.m12 are lower and upper limits of ijfsa.2012070103.m13 respectively and satisfy the condition ijfsa.2012070103.m14 . For any two interval ijfsa.2012070103.m15 and ijfsa.2012070103.m16 where ijfsa.2012070103.m17 and ijfsa.2012070103.m18 then (i) ijfsa.2012070103.m19, ijfsa.2012070103.m20, (ii) ijfsa.2012070103.m21, ijfsa.2012070103.m22 and (iii) ijfsa.2012070103.m23, ijfsa.2012070103.m24 and ijfsa.2012070103.m25.

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