Birational Rowmotion on a Rectangle over a Noncommutative Ring

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Date

Volume

17

Issue

Journal

Series Titel

Oberwolfach Preprints (OWP)

Book Title

Publisher

Oberwolfach : Mathematisches Forschungsinstitut Oberwolfach

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Abstract

We extend the periodicity of birational rowmotion for rectangular posets to the case when the base field is replaced by a noncommutative ring (under appropriate conditions). This resolves a conjecture from 2014. The proof uses a novel approach and is fully self-contained.

Description

Keywords

Rowmotion, Posets, Noncommutative rings, Semirings, Zamolodchikov periodicity, Root systems, Promotion, Trees, Graded posets, Grassmannian, Tropicalization

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