Adamović–Milas logarithmic constant term identity

Let (a)m=a(a+1)(a+m1)(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)=1i<jn(xixj).\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=(n1)/2m=(n-1)/2 and K=2k+1K=2k+1. Then

CT[Δ(X)i=1nximi=1mlog(1x2ix2i1)1ijn(1xixj)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.

Sources & referencesView supporting material

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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