Inspired by the recent work Sahin and Agha gave recursion formulas for G1 and G2 Horn
hypergeometric functions (Sahin and Agha in Miskolc Math Notes 16(2):1153–1162, 2015).
The object of work is to establish several new recursion relations, relevant differential recursion
formulas, new integral operators, infinite summations and interesting results for Horn’s
hypergeometric functions G1, G2 and G3.