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• W2924338600 abstract "We introduce and study a cone which consists of a class of generalized polynomial functions and which provides a common framework for recent non-negativity certificates of polynomials in sparse settings. Specifically, this $mathcal{S}$-cone generalizes and unifies sums of arithmetic-geometric mean exponentials (SAGE) and sums of non-negative circuit polynomials (SONC). We provide a comprehensive characterization of the dual cone of the $mathcal{S}$-cone, which even for its specializations provides novel and projection-free descriptions. As applications of this result, we give an exact characterization of the extreme rays of the $mathcal{S}$-cone and thus also of its specializations, and we provide a subclass of functions for which non-negativity coincides with membership in the $mathcal{S}$-cone. Moreover, we derive from the duality theory an approximation result of non-negative univariate polynomials and show that a SONC analogue of Putinar's Positivstellensatz does not exist even in the univariate case." @default.
• W2924338600 created "2019-04-01" @default.
• W2924338600 creator A5020906385 @default.
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• W2924338600 date "2019-03-21" @default.
• W2924338600 modified "2023-09-27" @default.
• W2924338600 title "A unified framework of SAGE and SONC polynomials and its duality theory" @default.
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• W2924338600 hasPublicationYear "2019" @default.
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