PT Journal
AU Greynat, D
   Sesma, J
   Vulvert, G
TI Derivatives of the Pochhammer and reciprocal Pochhammer symbols and their use in epsilon-expansions of Appell and Kampe de Feriet functions
SO Journal of Mathematical Physics
JI J. Math. Phys.
PY 2014
BP 043501
EP 16pp
VL 55
IS 4
DI 10.1063/1.4870619
LA English
AB Useful expressions of the derivatives, to any order, of Pochhammer and reciprocal Pochhammer symbols with respect to their arguments are presented. They are building blocks of a procedure, recently suggested, for obtaining the e-expansion of functions of the hypergeometric class related to Feynman integrals. The procedure is applied to some examples of such kind of functions taken from the literature.
ER