Magnus Hellstrøm-Finnsen

activity

20162022

most citedHochschild cohomology of some quantum complete intersections

12 citations · 12 across the 3 of their papers we have counts for

collaborators

3 papers

math.CT2022

Hochschild Cohomology, Monoid Objects and Monoidal Categories

Magnus Hellstrøm-Finnsen

This paper expands further on a category theoretical formulation of Hochschild cohomology for monoid objects in monoidal categories enriched over abelian groups, which has been stu…

math.KT2017★ 12 cited

Hochschild cohomology of some quantum complete intersections

Karin Erdmann, Magnus Hellstrøm-Finnsen

We compute the Hochschild cohomology ring of the algebras $A = k ⟨ X, Y ⟩ / (X^{a}, X Y - q Y X, Y^{a})$ over a field $k$ where $a \geq 2$ and where $q \in k$ is a primitive $a$ -th ro…

math.CT2016

Hochschild cohomology of ring objects in monoidal categories

Magnus Hellstrøm-Finnsen

We define the Hochschild complex and cohomology of a ring object in a monoidal category enriched over abelian groups. We interpret the cohomology groups and prove that the cohomolo…