Abstract
In this paper, we present a class of functions:f:X→
such that inf x∈X f(x)=\(\inf _{x \in {\rm B}_X } f(x)\), whereX is a nonempty, finitely compact and convex set in a vector space andB x ={x∈X: ∃y∈ aff(X)∖{x:[x, y]∩X={x}. Our main tool is a recent minimax theorem by Ricceri (Ref. 1).
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Communicated by R. Conti
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Naselli, O. On a class of functions with equal infima over a domain and its boundary. J Optim Theory Appl 91, 81–90 (1996). https://doi.org/10.1007/BF02192283
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DOI: https://doi.org/10.1007/BF02192283