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Annali di Matematica Pura ed Applicata

, Volume 39, Issue 1, pp 63–64 | Cite as

Extension of Huyghens' principle to the ultrahyperbolic equation

  • Hans Lewy
Article

Summary

Asgeirsson's formula of spherical averages in shown to be a consequence of the validity of the ultrahyperbolic equation on a certain characteristic manifold.

Keywords

Spherical Average Characteristic Manifold Ultrahyperbolic Equation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Literatur

  1. (1).
    SeeR. Courant andD. Hilbert,Methoden der mathematischen Physik, Volume II, Springer, Berlin 1937, p. 417.Google Scholar

Copyright information

© Swets & Zeitlinger B. V. 1955

Authors and Affiliations

  • Hans Lewy
    • 1
  1. 1.BerkeleyU.S.A.

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