The categorical blob versus Soergel conjecture

Let pp be a prime, let l2l\geq 2, and fix the data (e,l,n,κ)(e,l,n,\kappa) of a generalized blob algebra. For a regular λP1l(n)\boldsymbol{\lambda}\in P_1^l(n), let Blobl(λ)\mathrm{Blob}^l({\leq \boldsymbol{\lambda}}) be the category of generalized blob-algebra morphisms between weights in the orbit of λ\boldsymbol{\lambda} below λ\boldsymbol{\lambda}, and let HBSl(λ){\mathcal{H}}_{BS}^l(\leq \boldsymbol{\lambda}) be the corresponding finite full subcategory of the characteristic-pp diagrammatic Hecke category. Categorical blob versus Soergel conjecture. For each integer l2l\geq 2, there is an equivalence of categories

Blobl(λ)HBSl(λ)\mathrm{Blob}^l({\leq \boldsymbol{\lambda}}) \cong {\mathcal{H}}_{BS}^l(\leq \boldsymbol{\lambda})

sending μ\boldsymbol{\mu} to BS(wμ)BS(\underline{w}_{\boldsymbol{\mu}}). This conjecture proposes a categorical realization of the characteristic-pp diagrammatic Hecke category through generalized blob algebras; its infinite reformulation is the equivalence in Candidate 4.

Sources & referencesView supporting material

Primary source

Nicolas Libedinsky and David Plaza, “Blob algebra approach to modular representation theory”, arXiv:1801.07200 (2020).

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