2 papers
math.CA2016
Beurling's theorem for the Clifford-Fourier transform
Rim Jday, Jamel El Kamel
We give a generalization of Beurling's theorem for the Clifford-Fourier transform. Then, analogues of Hardy, Cowling-Price and Gelfand-Shilov theorems are obtained in Clifford anal…
math.CA2012
A function Class of strictly positive definite and logarithmically completely monotonic functions related to the modified Bessel functions
Jamel El Kamel, Khaled Mehrez
In this paper we give some conditions for a class of functions related to Bessel functions to be positive definite or strictly positive definite . We present some properties and re…