Bivariate orthogonal polynomials on triangular domains

In the paper [A. Rababah, M. Alqudah, Jacobi-weighted orthogonal polynomials on triangular domains, J. Appl. Math. 3 (2005) 205-217.], Jacobi-weighted orthogonal polynomials Pn,r(α,β,γ)(u,v,w),α,β,γ>−1 on the triangular domain T for values of α,β,γ>−1 in the plane α+β+γ=0 are constructed. In this paper, the results are generalized to every point in the space ∀α,β,γ>−1.