الفهرس 
Fuzzy subsetsOnly 14 pages are availabe for public view
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Abstract
The concept of fuzzy subsets , introduced by Zadeh [41] in 1965 ,
played an important role in applications and in such mathematical theories as
Logic and Topology .
In 1968, Chang [3] used this concept to introduce the concept of fuzzy
topological spaces. Subsequently. Wong 138, 391, Lowen 1151 , and others
extended some basic concepts from general topology to fuzzy subsets and
developed a theory of fuzzy topological spaces .
Ln 1982, Lowen [19], introduced the concept of fuzzy neighbourhood
spaces (FNS,for short ), where they are a special type of fuzzy topological
spaces . This concept has been developed by several authors ( e.g. [26] ).
Ln 1993, Nehad N. Morsi [28], introduced the notion of a core theory,
simultaneously for general topology and for fuzzy topology . He generalized
the theory of the Scott topology on a partially ordered set, as a special instance
of core theory from general topology .