Abstract
The elliptic functions sn u, cn u, and dn u are defined as ratios of theta functions as below:
where z = u/θ 23 (0). sn u is read as “es en yew” or as “san yew”; cn u and dn u can similarly be read letter by letter or as “can u” and “dan u” respectively.
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© 1989 Springer Science+Business Media New York
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Lawden, D.F. (1989). Jacobi’s Elliptic Functions. In: Elliptic Functions and Applications. Applied Mathematical Sciences, vol 80. Springer, New York, NY. https://doi.org/10.1007/978-1-4757-3980-0_2
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DOI: https://doi.org/10.1007/978-1-4757-3980-0_2
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