The second Brauer–Thrall conjecture for tau-tilting infinite algebras

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Let AA be a finite-dimensional algebra. A module V∈mod⁡(A)V\in\operatorname{mod}(A) is a brick if its endomorphism algebra is a division algebra. The algebra AA is tau-tilting infinite if it has infinitely many support tau-tilting modules.

Second Brauer–Thrall conjecture. If AA is tau-tilting infinite, then there exists a dimension d≥0d\geq 0 and infinitely many pairwise non-isomorphic bricks V∈mod⁡(A)V\in\operatorname{mod}(A) with dim⁡(V)=d\dim(V)=d.

This is a tau-tilted version of the second Brauer–Thrall conjecture. The paper notes that the theorem proved for affine GLS algebras confirms this conjecture for that class, while the general assertion remains open.

References

Primary source

Calvin Pfeifer, “A generic classification of locally free representations of affine GLS algebras”, arXiv:2308.09587 (2023).

Additional references

3 papers in this index state this conjecture (2019–2023). The statement above is taken from the most recent of them; the others are arXiv:2004.14221, arXiv:1911.09021.

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