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Article type: Research Article
Authors: Solanilla, Leonardo* | Leal, Jhonny Andrés | Tique, Diego Mauricio
Affiliations: Departamento de Matemáticas y Estadística, Universidad del Tolima, Barrio Santa Elena, Ibagué, Tolima, Colombia
Correspondence: [*] Corresponding author: Leonardo Solanilla, Departamento de Matemáticas y Estadística, Universidad del Tolima, Barrio Santa Elena, Ibagué, Tolima, Colombia. Tel.: +57 322 4662381; E-mail: leonsolc@ut.edu.co.
Abstract: The inverses of Jacobi elliptic functions possess an apparently-non-crucial property: they provide almost-everywhere-conformal maps on a hemisphere onto a torus and so, onto a parallelogram. Thus, they produce map projections on the sphere generalizing the famous quincuncial projection of Charles S. Peirce. Besides providing a general practical definition of n-uncial map and proving that all the considered inverse elliptic functions are n-uncial, we give operative handy formulas to calculate these maps. To the best of our knowledge, these useful formulas have not been all together published before, except for Pierce projection. We look forward to their numerical implementation. By the way, we also classify the resulting map projections according the number of singularities.
Keywords: Elliptic functions and integrals (MSC 33E05), conformal mappings of special domains (MSC 30C20), numerical methods in conformal mapping theory (MSC 30C30), compact riemann surfaces and uniformization (MSC 30F10)
DOI: 10.3233/JCM-215014
Journal: Journal of Computational Methods in Sciences and Engineering, vol. 21, no. 5, pp. 1469-1483, 2021
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