On Quasiconvex Functions Which are Convexifiable or Not
نویسندگان
چکیده
A quasiconvex function f being given, does there exist an increasing and continuous k which makes $$k\circ f$$ convex? How to build such a k? Some words on least convex (concave) functions. The ratio of two positive numbers is neither locally convexifiable nor concavifiable. Finally, some considerations the approximation preorder from finite number observations revealed preference problem are discussed.
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ژورنال
عنوان ژورنال: Journal of Optimization Theory and Applications
سال: 2021
ISSN: ['0022-3239', '1573-2878']
DOI: https://doi.org/10.1007/s10957-021-01965-1