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From quasi-hereditary algebras with exact Borel subalgebras to directed bocses

Up to Morita equivalence, every quasi-hereditary algebra is the dual algebra of a directed bocs or coring. From the bocs, an exact Borel subalgebra is obtained. In this paper a characterisation of exact Borel subalgebras arising in this way is given.

preprint2019arXivOpen access
Tomasz BrzezińskiJulian KülshammerSteffen Koenig
math.RTmath.AGmath.RA
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Tomasz BrzezińskiJulian KülshammerSteffen Koenig

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