Pieri-type formulas for the non-symmetric Jack polynomials

Details Pieri-type formulas for the non-symmetric Jack polynomials Pieri-type formulas for the non-symmetric Jack polynomials

2000-06-01

arxiv.org/abs/math/0006006v1

Mathematics

Quantum Algebra

19 pages

Scientific paper

In the theory of symmetric Jack polynomials the coefficients in the expansion of the $p$th elementary symmetric function $e_p(z)$ times a Jack polynomial expressed as a series in Jack polynomials are known explicitly. Here analogues of this result for the non-symmetric Jack polynomials $E_\eta(z)$ are explored. Necessary conditions for non-zero coefficients in the expansion of $e_p(z) E_\eta(z)$ as a series in non-symmetric Jack polynomials are given. A known expansion formula for $z_i E_\eta(z)$ is rederived by an induction procedure, and this expansion is used to deduce the corresponding result for the expansion of $\prod_{j=1, j\ne i}^N z_j E_\eta(z)$, and consequently the expansion of $e_{N-1}(z) E_\eta(z)$. In the general $p$ case the coefficients for special terms in the expansion are presented.

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