Summary
A solution of the wave equation in the form of a series is given. The convergence of this series can be expected to be better than that of the Bremmer series. The relation between this Bremmer series, the W.K.B. approximation and the new solution is discussed.
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References
Bremmer, H., Comm. Pure and Appl. Math.IV (1951) 105.
Atkinson, F. V., J. Math. Anal. and Appl.i, (1960) 255.
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Broer, L.J.F. Note on approximate solutions of the wave equation. Appl. Sci. Res. 10, 110–118 (1962). https://doi.org/10.1007/BF02928067
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DOI: https://doi.org/10.1007/BF02928067