Polynomial solutions of differentialdifference equations
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If you have a question about this talk, please contact Mustapha Amrani.
Discrete Integrable Systems
We investigate the zeros of polynomial solutions to the differentialdifference equation [ P_{n+1}(x)=A_{n}(x)P_{n}^{prime}(x)+B_{n}(x)P_{n}(x),~ n=0,1,dots ] where $A_n$ and $B_n$ are polynomials of degree at most $2$ and $1$ respectively. We address the question of when the zeros are real and simple and whether the zeros of polynomials of adjacent degree are interlacing. Our result holds for general classes of polynomials but includes sequences of classical orthogonal polynomials as well as EulerFrobenius, Bell and other polynomials.
This talk is part of the Isaac Newton Institute Seminar Series series.
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