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摘要
This note proves a conjecture of Sparling [Germ of a synthesis: space-time is spinorial, extra dimensions are time-like. Proc R Soc Lond Ser A Math Phys Eng Sci. 2007; 463(2083): 1665-1679; The Xi-transform for conformally flat space-time. arXiv:gr-qc/0612006; 2006.], that the ultrahyperbolic wave operator and the Xi transform on S-3 x S-3 form an exact couple.
- 出版日期2018
