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On pentagon identity in Ding-Iohara-Miki algebra

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arxiv 2112.14687 v1 pith:2ATF4ESE submitted 2021-12-29 math.QA hep-th

On pentagon identity in Ding-Iohara-Miki algebra

classification math.QA hep-th
keywords identitypentagonalgebrading-iohara-mikiquantumcasescertainchecks
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We notice that the famous pentagon identity for quantum dilogarithm functions and the five-term relation for certain operators related to Macdonald polynomials discovered by Garsia and Mellit can both be understood as specific cases of a general "master pentagon identity" for group-like elements in the Ding-Iohara-Miki (or quantum toroidal, or elliptic Hall) algebra. We perform some checks of this remarkable identity and discuss its implications.

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  1. Symmetric polynomials: DIM integrable systems versus twisted Cherednik systems

    hep-th 2026-01 unverdicted novelty 7.0

    For t = q^{-m}, eigenfunctions from DIM Hamiltonians and twisted Cherednik Hamiltonians combine into identical symmetric functions that are eigenfunctions of both systems simultaneously.