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- W4288639346 abstract "A gauge $gamma$ in a vector space $X$ is a distance function given by the Minkowski functional associated to a convex body $K$ containing the origin in its interior. Thus, the outcoming concept of gauge spaces $(X, gamma)$ extends that of finite dimensional real Banach spaces by simply neglecting the symmetry axiom (a viewpoint that Minkowski already had in mind). If the dimension of $X$ is even, then the fixation of a symplectic form yields an identification between $X$ and its dual space $X^*$ . The image of the polar body $K^{circ}subseteq X^*$ under this identification yields a (skew-)dual gauge on $X$. In this paper, we study geometric properties of this so-called dual gauge, such as its behavior under isometries and its relation to orthogonality. A version of the Mazur-Ulam theorem for gauges is also proved. As an application of the theory, we show that closed characteristics of the boundary of a (smooth) convex body are optimal cases of a certain isoperimetric inequality." @default.
- W4288639346 created "2022-07-30" @default.
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- W4288639346 date "2019-01-10" @default.
- W4288639346 modified "2023-09-27" @default.
- W4288639346 title "Duality of gauges and symplectic forms in vector spaces" @default.
- W4288639346 doi "https://doi.org/10.48550/arxiv.1901.03421" @default.
- W4288639346 hasPublicationYear "2019" @default.
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