Summary
The validity of the Huyghens principle for half-integer powers of the D’Alembertian in odd number of dimensions is discussed. It is shown in particular that for □1/2 in 2+1 the dynamic of □ in 3+1 is obtained.
References
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E. C. Marino: Nota Científica, preprint 16/90 Pontifícia Universidade Católica do Rio de Janeiro.
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Giambiagi, J.J. Huyghens’ principle in (2n+1) dimensions for nonlocal pseudodifferential operators of the type □α . Nuov Cim A 104, 1841–1844 (1991). https://doi.org/10.1007/BF02812498
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DOI: https://doi.org/10.1007/BF02812498