Homomorphism conjecture for shard modules of the same dimension

From papers

Let β\beta be a positive real root, and let B1B_1 and B2B_2 be shard modules of dimension β\beta. Homomorphism conjecture. Then

Hom(B1,B2)0.\operatorname{Hom}(B_1,B_2)\neq 0.

This conjecture would imply that the dimension vectors arising from the torsion and torsion-free parts of any torsion pair are disjoint, a necessary condition for associating a biclosed partition of the positive real roots to a torsion pair. Its status is not resolved in the supplied source.

Progress summary

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

Sources & referencesView supporting material

Primary source

Will Dana, David E Speyer and Hugh Thomas, “Shard modules”, arXiv:2303.16332 (2023).

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