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Ext operators for wreath Macdonald polynomials
Published 14 Aug 2025 in math.QA, math.CO, and math.RT | (2508.10772v1)
Abstract: We introduce a wreath Macdonald polynomial analogue of the Carlsson--Nekrasov--Okounkov vertex operator. As an application, we prove a modular $(q,t)$-Nekrasov--Okounkov formula for $r\ge 3$ originally conjectured by Walsh and Warnaar.
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