Hyperbolicity cones are amenable
Hyperbolicity cones are amenable
复制标题
双曲锥体是可以接受的
DOI:
10.1007/s10107-023-01958-0
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发表时间:
2023
影响因子:
2.7
通讯作者:
Saunderson James
中科院分区:
文献类型:
--
作者:
Lourenco Bruno F.;Roshchina Vera;Saunderson James
Amenability is a notion of facial exposedness for convex cones that is stronger than being facially dual complete (or ‘nice’) which is, in turn, stronger than merely being facially exposed. Hyperbolicity cones are a family of algebraically structured closed convex cones that contain all spectrahedral cones (linear sections of positive semidefinite cones) as special cases. It is known that all spectrahedral cones are amenable. We establish that all hyperbolicity cones are amenable. As part of the argument, we show that any face of a hyperbolicity cone is a hyperbolicity cone. As a corollary, we show that the intersection of two hyperbolicity cones, not necessarily sharing a common relative interior point, is a hyperbolicity cone.
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