Representations through more general functions

Through hypergeometric functions

Involving _pF^~_q

For Phi^{^}(z,s,a)

Involving _pF_q

For Phi^{^}(z,s,a)

Through Meijer G

Classical cases for the direct function itself

For Phi(z,s,a)

For Phi^{^}(z,s,a)

Classical cases involving unit step theta

For Phi(z,s,a)