Diagrams for Roots and Quiver Representations in the context of the Gabriel-Kac Theorem

arXiv:2610.37969v1 Announce Type: new Abstract: Using the data of the Dynkin diagrams, we build graphical calculi for representing the positive roots of Kac-Moody algebras and the representations of quivers. Once developed, we use these to analyze the asymptotic size of the root and representation spaces, and discuss how this relates to the Gabriel-Kac theorem, the correspondence between these two structures. We give a refinement of this correspondence in terms of the trichotomy of growth rates for Kac-Moody algebras depending on if they are of finite, affine, or indefinite type, which is done in terms of what we call ``tree like" representations.

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