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- W2952804363 abstract "We present a simple technique to compute moments of derivatives of unitary characteristic polynomials. The first part of the technique relies on an idea of Bump and Gamburd: it uses orthonormality of Schur functions over unitary groups to compute matrix averages of characteristic polynomials. In order to consider derivatives of those polynomials, we here need the added strength of the Generalized Binomial Theorem of Okounkov and Olshanski. This result is very natural as it provides coefficients for the Taylor expansions of Schur functions, in terms of shifted Schur functions. The answer is finally given as a sum over partitions of functions of the contents. One can also obtain alternative expressions involving hypergeometric functions of matrix arguments." @default.
- W2952804363 created "2019-06-27" @default.
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- W2952804363 date "2010-01-01" @default.
- W2952804363 modified "2023-09-25" @default.
- W2952804363 title "A note on moments of derivatives of characteristic polynomials" @default.
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