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A maximum principle

Published online by Cambridge University Press:  09 April 2009

Kung-Fu Ng
Affiliation:
Mathematics Department Science Centre The Chinese University of Hong Kong Shatin, N. T. Hong Kong
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Abstract

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Let K be a nonempty compact set in a Hausdorff locally convex space, and F a nonempty family of upper semicontinuous convex-like functions from K into [–∞, ∞). K is partially ordered by F in a natural manner. It is shown among other things that each isotone, upper semicontinuous and convex-like function g: K → [ – ∞, ∞) attains its K-maximum at some extreme point of K which is also a maximal element of K.

Subject classification (Amer. Math. Soc. (MOS) 1970): primary 46 A 40.

Type
Research Article
Copyright
Copyright © Australian Mathematical Society 1979

References

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