Gauge-reversing maps on cones, and Hilbert and Thompson isometries
Gauge-reversing maps on cones, and Hilbert and Thompson isometries
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锥体上的计量反转图以及希尔伯特和汤普森等轴测图
DOI:
10.2140/gt.2018.22.55
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发表时间:
2013
影响因子:
2
通讯作者:
C. Walsh
中科院分区:
文献类型:
--
作者:
C. Walsh
We show that a cone admits a gauge-reversing map if and only if it is a symmetric cone. We use this to prove that every isometry of a Hilbert geometry is a collineation unless the Hilbert geometry is the projective space of a non-Lorentzian symmetric cone, in which case the collineation group is of index two in the isometry group. We also determine the isometry group of the Thompson geometry on a cone.