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JOURNALS // Eurasian Mathematical Journal // Archive

Eurasian Math. J., 2016 Volume 7, Number 3, Pages 89–99 (Mi emj234)

This article is cited in 6 papers

An analogue of the Hahn–Banach theorem for functionals on abstract convex cones

F. S. Stonyakin

Department of algebra and functional analysis, Crimea Federal University, 4 V. Vernadsky Ave, Simferopol, Russia

Abstract: We prove an analogue of the Hahn–Banach theorem on the extension of a linear functional with a convex estimate for each abstract convex cone with the cancellation law. Also we consider the special class of the so-called strict convex normed cones $(SCNC)$. For such structures we obtain an appropriate analogue of the Hahn–Banach separation theorem. On the base of this result we prove that each $(SCNC)$ is sublinearly, injectively and isometrically embedded in some Banach space.

Keywords and phrases: abstract convex cone, cancellation law, convex functional, Hahn–Banach theorem, convex normed come, Lemma on a support functional, strict convex normed cone, sublinear injective isometric embedding.

MSC: 46A22, 46A20, 46B10

Received: 27.04.2016

Language: English



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