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Inequalities of Appell’s hypergeometric functions of two variables. (English) Zbl 0878.33007

The authors obtain inequalities for Appell’s hypergeometric functions \(F_1\), \(F_2\), \(F_3\) and \(F_4\) for positive real arguments which hold in wider domains under weaker conditions and give sharper bounds in some cases. Numerical verification of their results is also provided in a table and a few additional inequalities are also given.

MSC:

33C65 Appell, Horn and Lauricella functions
26D15 Inequalities for sums, series and integrals