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Schedules and the Delta Conjecture
Annals of Combinatorics ( IF 0.5 ) Pub Date : 2020-11-26 , DOI: 10.1007/s00026-020-00517-0
James Haglund , Emily Sergel

In a recent preprint, Carlsson and Oblomkov (Affine Schubert calculus and double coinvariants. arXiv preprint 1801.09033, 2018) obtain a long sought-after monomial basis for the ring \(\mathrm{D}\!\mathrm{R}_n\) of diagonal coinvariants. Their basis is closely related to the “schedules” formula for the Hilbert series of \(\mathrm{D}\!\mathrm{R}_n\) which was conjectured by the first author and Loehr (Discete Math 298(1–3):189–204, 2005) and first proved by Carlsson and Mellit (A proof of the shuffle conjecture. J Amer Math Soc 31(3):661–697, 2018), as a consequence of their proof of the famous Shuffle Conjecture. In this article, we obtain a schedules formula for the combinatorial side of the Delta Conjecture, a conjecture introduced by the Haglund et al. (Trans Am Math Soc 370(6):4029–4057, 2018), which contains the Shuffle Theorem as a special case. Motivated by the Carlsson–Oblomkov basis for \(\mathrm{D}\!\mathrm{R}_n\) and our Delta schedules formula, we introduce a (conjectural) basis for the super-diagonal coinvariant ring \(\mathrm{S}\!\mathrm{D}\!\mathrm{R}_n\), an \(S_n\)-module generalizing \(\mathrm{D}\!\mathrm{R}_n\) introduced recently by Zabrocki (a module for the Delta conjecture. arXiv preprint 1902.08966, 2019), which conjecturally corresponds to the Delta Conjecture.



中文翻译:

时间表和三角洲猜想

在最近的预印本中,Carlsson和Oblomkov(Affine Schubert演算和双协变量。arXiv预印本1801.09033,2018年)为环\(\ mathrm {D} \!\ mathrm {R} _n \)获得了广受欢迎的单项式对角协变量。它们的基础与\(\ mathrm {D} \!\ mathrm {R} _n \)的Hilbert系列的“计划”公式密切相关它由第一作者和Loehr猜想(Discete Math 298(1-3):189-204,2005年),并首先由Carlsson和Mellit证明(随机猜想的证明。J Amer Math Soc 31(3):661 –697,2018),因为他们证明了著名的洗牌猜想。在本文中,我们获得了Delta猜想(由Haglund等人提出的猜想)的组合方面的时间表公式。(Trans Am Math Soc 370(6):4029-4057,2018年),其中包含作为特殊情况的随机定理。根据\(\ mathrm {D} \!\ mathrm {R} _n \)的Carlsson–Oblomkov基础和我们的Delta计划公式,我们为超对角协变环\(\ mathrm { S} \!\ mathrm {D} \!\ mathrm {R} _n \),一个\(S_n \)-模块概括Zabrocki(Delta猜想的模块。arXiv预印本1902.08966,2019 最近引入了\(\ mathrm {D} \!\ mathrm {R} _n \),它在推测上对应于Delta Conjecture。

更新日期:2020-11-27
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