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Symbolic computations for the manuscripts

A) Linear partial divided-difference equation satisfied by multivariate orthogonal polynomials on quadratic lattices

- Divided difference and three term recurrence equation of some bivariate orthogonal polynomials on quadratic lattices.mw (save as .mw file in your computer)
- hsum17.mpl (save as .mpl file in your computer)
- Three term recurrence relation for bivariate Racah polynomials (save as .nb file in your computer)
- Three term recurrence relation for bivariate Wilson polynomials (save as .nb file in your computer)
- Three term recurrence relation for bivariate continuous dual Hahn polynomials (save as .nb file in your computer)
- Three term recurrence relation for bivariate continuous Hahn polynomials (save as .nb file in your computer)

B) Divided-difference equation and three-term recurrence relations of some systems of bivariate *q*-orthogonal polynomials

- Divided difference and three term recurrence equation of some q OP.mw (save as .mw file in your computer)
- qsum17.mpl (save as .mpl file in your computer)
- Three term recurrence relation for bivariate q-Racah polynomials (save as .nb file in your computer)
- Three term recurrence relation for bivariate Askey-Wilson polynomials (save as .nb file in your computer)