English

Towards interpolating categories for equivariant map algebras

Representation Theory 2025-05-01 v1 Category Theory

Abstract

Using the language of string diagrams, we define categorical generalizations of modules for map algebras gA\mathfrak{g} \otimes A and equivariant map algebras (gA)Γ(\mathfrak{g} \otimes A)^\Gamma, where g\mathfrak{g} is a Lie algebra, AA is a commutative associative algebra, and Γ\Gamma is an abelian group acting on g\mathfrak{g} and AA. After establishing some properties of these modules, we present several examples of how our definitions can applied in various diagrammatic categories. In particular, we use the oriented Brauer category OB to construct a candidate interpolating category for the categories of glnk[t]\mathfrak{gl}_n \otimes k[t]-modules.

Keywords

Cite

@article{arxiv.2504.21163,
  title  = {Towards interpolating categories for equivariant map algebras},
  author = {Saima Samchuck-Schnarch},
  journal= {arXiv preprint arXiv:2504.21163},
  year   = {2025}
}

Comments

23 pages

R2 v1 2026-06-28T23:16:01.053Z