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On the continued fraction \(\frac{1 |}{| z } +\frac{1 |}{| 1 } + \frac{2 |}{| z } +\frac{3 |}{| 1 } + \frac{4 |}{| z} + \cdots\)

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Abstract

The article on hand deals with the continued fraction

$$\frac{1 |}{| z } +\frac{1 |}{| 1 } + \frac{2 |}{| z } +\frac{3 |}{| 1 } + \frac{4 |}{| z} + \cdots.$$

The famous Indian mathematician Srinivasa Ramanujan has given a pre-presentation by a power series, but he however concealed a proof. Subsequently a proof has been established, but a direct verification is intricate. Here we give a quick and direct approach with comparitively little effort.

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References

  1. Berndt, B.C.: Ramanujan’s Notebooks, Part II. Springer, Berlin (1999)

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  3. Perron, O.: Die Lehre von den Kettenbrüchen, vol. II (Analytisch-funktionentheoretische Kettenbrüche), Darmstadt (1977)

  4. Ramanujan, S.: Notebooks. Tata Institute of Fundamental Research, Bombay (1957) (2 volumes)

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  5. Riede, H.: Über eine Formel von S. Ramanujan, Bad Honnef 2007, unpublished manuscript

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Correspondence to Harald Riede.

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Riede, H. On the continued fraction \(\frac{1 |}{| z } +\frac{1 |}{| 1 } + \frac{2 |}{| z } +\frac{3 |}{| 1 } + \frac{4 |}{| z} + \cdots\) . Ramanujan J 26, 35–43 (2011). https://doi.org/10.1007/s11139-010-9268-8

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  • DOI: https://doi.org/10.1007/s11139-010-9268-8

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