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- W3103292073 abstract "In 2001, Zhongmin Shen asked if it is possible for two projectively related Finsler metrics to have the same Riemann curvature tensor, [14, page 184]. In this paper, we provide an answer to this question, within the class of Finsler metrics of scalar flag curvature. In Theorem 3.1, we show that the answer is negative, for non-vanishing scalar flag curvature. The answer is known to be positive when the scalar flag curvature vanishes, [12, 14] and this positive answer is related to the existence of many solutions to Hilbert's Fourth Problem. As a generalisation of this problem, we can ask if it is possible for a given spray, with non-vanishing scalar flag curvature, to represent, after reparametrisation, the geodesic spray of a Finsler metric. In Proposition 3.3, we show how to construct sprays whose projective class does not contain any Finsler metrizable spray with the same Riemann curvature tensor." @default.
- W3103292073 created "2020-11-23" @default.
- W3103292073 creator A5039771218 @default.
- W3103292073 date "2015-11-17" @default.
- W3103292073 modified "2023-09-23" @default.
- W3103292073 title "Funk Functions and Projective Deformations of Sprays and Finsler Spaces of Scalar Flag Curvature" @default.
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- W3103292073 doi "https://doi.org/10.1007/s12220-015-9661-z" @default.
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