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Valuations and surface area measures

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Published/Copyright: May 9, 2012

Abstract.

We consider valuations defined on polytopes containing the origin which have measures on the sphere as values. We show that the classical surface area measure is essentially the only such valuation which is SL(n) contravariant of degree one. Moreover, for all real p, an Lp version of the above result is established for GL(n) contravariant valuations of degree p. This provides a characterization of the Lp surface area measures from the Lp Brunn–Minkowski theory.

Funding source: Austrian Science Fund (FWF)

Award Identifier / Grant number: P23639-N18

Received: 2011-12-16
Revised: 2012-02-07
Published Online: 2012-05-09
Published in Print: 2014-02-01

© 2014 by Walter de Gruyter Berlin/Boston

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