TheSchwarz reflection principle states that given a functionf(z) of a complex variablez such thatf(z) is real in a finite segment\(\Gamma \) of the real axis.

1. 1.

   The notation of Ref. [15] for a infinite definite limit refers to the fact that the function should tend to this infinite limit steadily without oscillating.

2. 2.

   In the manipulations for the demonstration of this theorem we take that the vanishing limits for\(x\rightarrow \infty \) tend to zero at least as\(x^{-\gamma }\) with\(\gamma >0\).

Authors and Affiliations

1. Departamento de Física, Universidad de Murcia, Murcia, Spain

   José Antonio Oller

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Correspondence toJosé Antonio Oller.

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