The E-finiteness conjecture for finite-dimensional algebras

About 1 year old · traced to

Let AA be a finite-dimensional algebra. Call AA EE-finite if, for every τ\tau-regular irreducible component Z∈Irr⁡(A)\mathcal{Z}\in\operatorname{Irr}(A), one has c(Z)=0c(\mathcal{Z})=0. Call AA brick-finite if it has only finitely many isomorphism classes of bricks.

E-finiteness conjecture. If AA is EE-finite, then AA is brick-finite.

The conjecture reformulates a question of Demonet about the existence of rational rays outside the τ\tau-tilting fan for brick-infinite algebras. It is stated as open and is described as widely believed.

References

Primary source

Kaveh Mousavand and Charles Paquette, “On the bricks (Schur representations) of finite dimensional algebras”, arXiv:2508.11789 (2025).

Progress summary

Never refreshed

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Solutions 0

No solutions have been posted yet.