Abstract Concavity of Increasing Co-radiant and Quasi-Concave Functions with Applications in Mathematical Economics



In this paper, we study nonnegative, increasing, co-radiant and quasi-concave functions over real locally convex topological vector spaces. Such functions have frequently been employed in microeconomic analysis. We next characterize the abstract concavity, the upper support set and the superdifferential of this class of functions by applying a type of duality, which is used in microeconomic theory.


Abstract concavity Abstract convexity Duality  Co-radiant function Quasi-concave function Increasing function Upper semi-continuous function Upper support set  Superdifferential Production function 

Mathematics Subject Classification

26A48 26B25 90C46 



The authors are very grateful to the anonymous referees for their useful suggestions on an earlier version of this paper. The comments of the referees were very fruitful, and these comments have enabled the authors to improve the paper significantly.


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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  1. 1.Department of MathematicsShahid Bahonar University of KermanKermanIran

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