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Revista de Matemática Teoría y Aplicaciones
versión impresa ISSN 1409-2433
Rev. Mat vol.23 no.2 San José jul./dic. 2016
Artículos
Zeroes of generalized Fresnel complementary integral functions
Ceros de funciones integrales complementarias de Fresnel generalizadas
1CIMPA, Universidad de Costa Rica, San José, Costa Rica. E-Mail: jaimelobosegura@hotmail.com
2CIMPA, Universidad de Costa Rica, San José, Costa Rica. E-Mail: mario.villalobos@ucr.ac.cr
Theoretical upper and lower bounds are established for zeroes of a parametric family of functions which are defined by integrals of the same type as the Fresnel complementary integral. Asymptotic properties for these bounds are obtained as well as monotony properties of the localization intervals. Given the value of the parameter an analytical-numerical procedure is deduced to enclose all zeros of a given function with an a priori error.
Keywords: Fresnel complementary integrals; zeroes of functions; theoretical bounds for zeroes; gamma distribution
Se establecen cotas superiores e inferiores teóricas para los ceros de una familia paramétrica de funciones que se definen por las integrales del tipo integral complementaria de Fresnel. Propiedades asintóticas de estas cotas se obtienen, así como propiedades de monotonía de los intervalos de localización. Dado el valor del parámetro un procedimiento analíticonumérico se deduce para acotar todos los ceros de una función dada con un error a priori.
Palabras clave: complementarias de Fresnel; ceros de funciones; cotas teóricas para ceros; distribución gamma
Acknowledgment
We wish to thank the anonymous referees for their valuable comments and suggestions.
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Received: February 13, 2015; Revised: April 14, 2016; Accepted: May 06, 2016













