Adamović–Milas logarithmic constant term identity

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Let (a)m=a(a+1)⋯(a+m−1)(a)_m=a(a+1)\cdots(a+m-1) be the rising factorial, let CT⁡\operatorname{CT} denote the constant term, and define the Vandermonde product by

Δ(X)=∏1≤i<j≤n(xi−xj).\Delta(X)=\prod_{1\leq i<j\leq n}(x_i-x_j).

Adamović–Milas logarithmic constant term conjecture. For odd positive integer nn and nonnegative integer kk, set m=(n−1)/2m=(n-1)/2 and K=2k+1K=2k+1. Then

CT⁡[Δ(X)∏i=1nxi−m∏i=1mlog⁡(1−x2ix2i−1)∏1≤i≠j≤n(1−xixj)k]=(nK)!!n!!(K!!)n.\operatorname{CT}\bigg[\Delta(X) \prod_{i=1}^n x_i^{-m} \prod_{i=1}^m \log\Big(1-\frac{x_{2i}}{x_{2i-1}}\Big) \prod_{1\leq i\neq j\leq n}\Big(1-\frac{x_i}{x_j}\Big)^k\bigg]=\frac{(nK)!!}{n!!(K!!)^n}.

This is presented as a discovery of Adamović and Milas and as a logarithmic analogue of the equal-parameter Dyson identity. The supplied text gives no resolution status for this identity.

References

Primary source

Tom Chappell, Alain Lascoux, S. Ole Warnaar and Wadim Zudilin, “Logarithmic and complex constant term identities”, arXiv:1112.3130 (2012).

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