Swedish Network for Algebra and Geometry

Welcome to the 5th SNAG meeting!

28-29th of March 2023

We are happy to announce the 5th meeting of the Swedish Network for Algebra and Geometry. The purpose of the network is to develop the interaction between mathematicians working in the fields of algebra and geometry at Swedish universities. In particular, we envisage an active participation of PhD students and young researchers with the aim to build networks and encourage collaboration.


Joakim Arnlind (Linköping University)
Sergei Silvestrov (Mälardalen University)
Johan Öinert (Blekinge Institute of Technology)


The meeting will take place at Mälardalen University from Tuesday 28th of March to Wednesday 29th of March 2023. Participants are encouraged to arrive on Monday 27th of March since the talks start on Tuesday morning. Please note that participants are expected to make their own arrangements for travel and accommodation.


If you would like to participate, please send an email to Joakim Arnlind.


All talks take place in Room U2-016 on the second floor of the U-building.
(Click on the title below to see the abstract)

Tuesday 28 March

09:05 - 09:15
Workshop opening
09:15 - 09:45
Hom-algebras and twisted derivations (Sergei Silvestrov)
09:50 - 10:20
Kronecker algebras - a case study (Joakim Arnlind)
10:25 - 10:55
The noncommutative geometry of frame bundles (Stefan Wagner)
11:00 - 11:30
Paradoxicality in groups and rings (Johan Öinert)
11:35 - 12:05
Group-graded rings with unbounded generating number (Karl Lorensen)
12:05 - 13:30
Lunch (Rosenhill Restaurant, U-building)
13:30 - 14:00
Finite-dimensional representations and Levi-Civita connections (Axel Tiger Norkvist)
14:05 - 14:35
Lie algebra modules which are free over a subalgebra (Jonathan Nilsson)
14:40 - 15:10
Graded von Neumann regularity of rings graded by semigroups (Daniel Lännström)
15:10 - 15:30
Coffee break
15:30 - 16:00
The quantitative inverse Galois problem for Del Pezzo surfaces (Olof Bergvall)
16:05 - 16:35
The trace property of ideals and modules (Peder Thompsson)
16:25 - 16:55
Information theory via matroids and polymatroids (Thomas Westerbäck)
18:00 - 23:00

Wednesday 29 March

09:15 - 09:45
Non-associative algebras in an associative context (Erik Darpö)
09:50 - 10:20
Other constructions of hom-associative algebras (Lars Hellström)
10:25 - 10:55
On classification of (n+1)-dimensional n-Hom-Lie algebras (Abdennour Kitouni)
11:00 - 11:30
Non-associative skew Laurent polynomial rings (Per Bäck)
12:00 - 13:30
Lunch (Rosenhill Restaurant, U-building)
13:30 - 14:00
Non-unital Ore extensions (Johan Richter)
14:05 - 14:35
Algebraically closed (σ,δ)-fields (Masood Aryapoor)
14:35 - 14:50
Coffee break
14:50 - 15:20
Symmetric (σ,τ)-derivations and (σ,τ)-Hochschild cohomology (Kwalombota Ilwale)
15:25 - 15:55
Operator representations of covariance type commutation relations (Domingos Djinja)
16:00 - 16:30
Divisibility in Hom-associative algebras (German Garcia)
16:30 - 16:40
Workshop closing (Sergei Silvestrov)


Joakim Arnlind(Linköping University)
Masood Aryapoor(Mälardalen University)
Olof Bergvall(Mälardalen University)
Per Bäck(Mälardalen University)
Erik Darpö(Linköping University)
Domingos Djinja(Mälardalen University)
German Garcia(Mälardalen University)
Lars Hellström(Mälardalen University)
Kwalombota Ilwale(Linköping University)
Abdennour Kitouni(Mälardalen University)
Karl Lorensen(Blekinge Institute of Technology/Pennsylvania State University)
Patrik Lundström(University West)
Daniel Lännström(Linköping University)
Jonathan Nilsson(Linköping University)
Johan Richter(Blekinge Institute of Technology)
Sergei Silvestrov(Mälardalen University)
Peder Thompsson(Mälardalen University)
Axel Tiger Norkvist(Linköping University)
Stefan Wagner(Blekinge Institute of Technology)
Thomas Westerbäck(Mälardalen University)
Johan Öinert(Blekinge Institute of Technology)