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Abstract: Uniform asymptotic expansions involving exponential and Airy functions are obtained for Laguerre polynomials L(?)n(x) , as well as complementary confluent hypergeometric functions. The expansions are valid for n large and ? small or large, uniformly for unbounded real and complex values of x. The new expansions extend the range of computability of L(?)n(x) compared to previous expansions, in particular with respect to higher terms and large values of ?. Numerical evidence of their accuracy for real and complex values of x is provided.
Autoría: Dunster T.M., Gil A., Segura J.,
Fuente: Advances in Computational Mathematics, 2018, 44(5), 1441-1474
Editorial: Springer
Fecha de publicación: 01/10/2018
Nº de páginas: 34
Tipo de publicación: Artículo de Revista
DOI: 10.1007/s10444-018-9589-5
ISSN: 1572-9044,1019-7168
Proyecto español: MTM2015-67142-P
Url de la publicación: https://link.springer.com/article/10.1007%2Fs10444-018-9589-5
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DUNSTER, T. M.
AMPARO GIL GOMEZ
JOSE JAVIER SEGURA SALA
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