∫01t-a0⁢(1-t)a0-bq+1-1⁢Gp,qm,n⁡(z⁢t;a1,…,apb1,…,bq)⁢ⅆ⁡t=Γ⁡(a0-bq+1)⁢Gp+1,q+1m,n+1⁡(z;a0,…,apb1,…,bq+1),