The α-levels of a fuzzy uniform structure and of a fuzzy proximity
✍ Scribed by Fatma Bayoumi
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 125 KB
- Volume
- 116
- Category
- Article
- ISSN
- 0165-0114
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✦ Synopsis
There are di erent notions of fuzzy uniform structures and of fuzzy proximities that have been introduced in the literature. In this paper we are interested in the fuzzy uniform structure U in the sense of G ahler et al. (1998) which is deÿned as some fuzzy ÿlter and we are also interested in the fuzzy proximity N in the sense of G ahler et al. ( 1998), called the fuzzy proximity of the internal type that is deÿned by means of another notion of symmetry not depending on an order-reversing involution. Here, we introduce the -level uniform structure U and the -level proximity N of U and N, respectively. We show that there is one-to-one correspondence between a fuzzy uniform structure U and the family (U ) ∈L 0 of uniform structures that fulÿlls certain conditions, is given by: U = U and U(U ) = A∈U ; A 6u . We also show that the topologies T U and T N associated with U and N coincides with the -level topologies of the fuzzy topologies U and N associated to U and N, respectively, that is, T U = ( U ) and T N = ( N ) . Moreover, we assign for each fuzzy uniform structure U an associated fuzzy proximity of the internal type N U and hence we get the relation between the -levels of U and of N U which is given by: N U = (N U ) .
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