Chapter 27 – The Jacobi Polynomial Revisited

A look back at Chapter 23 reveals a new way to view the orthogonal Jacobi Polynomial.  Through a series of identities it is possible to reduce any Jacobi polynomial P[m,a,b,x], with b> 1 and evaluated at x = 3 to a series of Jacobi polynomials with b = 1 or b = 0.  The scalar vector product with the diagonal of the Chebychev T polynomial is introduced.  It is shown that any Jacobi Polynomial P[m,a,b,3] is represented as vector products of an associated (m-1) row of the Pascal triangle and a shifted cycle index of the Symmetry group S(m).  A combinatoric role of the Jacobi is suggested in this analysis.

The Jacobi polynomial can also be used to calculate the nth term of the Perrin sequence and the sigma orbit of prime numbers as described in Chapter 13.

The Jacobi Polynomial Revisited



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