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arXiv · 2102.13005

Determinantal formulas with major indices

Thomas McConville·Donald Robertson·Clifford Smyth
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Abstract

We give a simple proof of a major index determinant formula in the symmetric group discovered by Krattenthaler and first proved by Thibon using noncommutative symmetric functions. We do so by proving a factorization of an element in the group ring of the symmetric group. By applying similar methods to the groups of signed permutations and colored permutations, we prove determinant formulas in these groups as conjectured by Krattenthaler.

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Thomas McConville, Donald Robertson, Clifford Smyth. 2021-02-25. Determinantal formulas with major indices. https://arxiv.org/abs/2102.13005

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