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$\operatorname{SL}(n)$ invariant valuations on super-coercive convex functions

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arxiv 1903.04225 v1 pith:SXB55YXB submitted 2019-03-11 math.MG math.FA

classification math.MGmath.FA
keywords invariantoperatornamevaluationscontinuousconvexfunctionsnon-negativespace
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abstract

All non-negative, continuous, $\operatorname{SL}(n)$ and translation invariant valuations on the space of super-coercive, convex functions on $\mathbb{R}^n$ are classified. Furthermore, using the invariance of the function space under the Legendre transform, a classification of non-negative, continuous, $\operatorname{SL}(n)$ and dually translation invariant valuations is obtained. In both cases, different functional analogs of the Euler characteristic, volume and polar volume are characterized.

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  1. A homogeneous decomposition theorem for valuations on convex functions

    math.MG 2019-08 conditional novelty 7.0 of 10

    Continuous, epi-translation invariant valuations on super-coercive convex functions decompose into homogeneous components of degrees 0 through n, and the degree-n valuations are exactly integrals of compactly supporte...

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