Duality in Fuzzy Sets and Dual Arithmetics of Fuzzy Sets
The conventional concept of α-level sets of fuzzy sets will be treated as the upper α-level sets. In this paper, the concept of lower α-level sets of fuzzy sets will be introduced, which can also be regarded as a dual concept of upper α-level sets of fuzzy set...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-12-01
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| Series: | Mathematics |
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| Online Access: | http://www.mdpi.com/2227-7390/7/1/11 |