Describes compatible structures on the radical of incidence algebras, highlighting their non-proper nature.
We describe totally compatible structures on the Jacobson radical of the incidence algebra of a finite poset over a field. We show that such structures are in general non-proper. Final version
No takes yet. Share an insight, caveat, or question.
Mykola Khrypchenko (2026) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: