Separation Theorem with Respect to Sub-topical Functions and Abstract Convexity
نویسندگان
چکیده
This paper deals with topical and sub-topical functions in a class of ordered Banach spaces. The separation theorem for downward sets and sub-topical functions is given. It is established some best approximation problems by sub-topical functions and we will characterize sub-topical functions as superimum of elementary sub-topical functions.
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