Summary
A series representation in terms of Tricomi functions is obtained for generalized exponential integral,E v{χ}, and related incomplete gamma-function,Γ(a, x).
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Chiccoli, C., Lorenzutta, S. & Maino, G. A note on a tricomi expansion for the generalized exponential integral and related functions. Il Nuovo Cimento B 103, 563–568 (1989). https://doi.org/10.1007/BF02753139
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DOI: https://doi.org/10.1007/BF02753139