Swedish Network for Algebra and Geometry

Welcome to the 2nd SNAG meeting!

Participants of the 2019 SNAG Workshop

We are happy to announce the second 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.

Organizers: Joakim Arnlind, Sergei Silvestrov and Johan Öinert.


The meeting will take place at BTH (Karlskrona) on the 17th-18th of October 2019 (map of the campus). The workshop starts on the 17th of October at 13.00, and end on the 18th of October at 16.00.

The following rooms are reserved for the workshop:

Thursday    Room J1640
Friday (before lunch)    Room J1640
Friday (after lunch)    Room C216

Both rooms are on the ground floor. See the map of the campus to find your way to the C-building and the J-building.


If you would like to attend the meeting, please send an email to Joakim Arnlind. Please note that participants are expected to make their own arrangements for travel and accommodation.


(Click on the title below to see the abstract.)

Thursday 17 October

13:00 - 13:10
Workshop opening
13:10 - 13:40
Object unital groupoid graded rings (Patrik Nystedt)
13:50 - 14:20
Natural generalizations of Kaplansky's conjectures (Johan Öinert)
14:20 - 14:50
Coffee break
14:50 - 15:20
Graded von Neumann regular rings (Daniel Lännström)
15:30 - 16:00
Realizations of free actions and their applications to lifting problems (Stefan Wagner)
16:10 - 16:40
Hilbert's basis theorem for hom-associative Ore extensions (Johan Richter)
16:50 - 17:20
Semilattice Decomposition of Semigroups: from the Theory to Applications (Melanija Mitrovic)

Friday 18 October

09:30 - 10:00
Projectors on the noncommutative cylinder (Joakim Arnlind)
10:00 - 10:30
Coffee break
10:30 - 11:00
On K -invariant q-deformed Levi-Civita connections (Kwalombota Ilwale)
11:10 - 11:40
Minimal embeddings in a noncommutative context (Axel Tiger Norkvist)
11:50 - 12:20
Hom-algebra structures and quasi hom-Lie algebras (Sergei Silvestrov)
12:20 - 14:00
14:00 - 14:30
Hom-Lie structures on 3-dimensional skew symmetric algebras (Elvice Ongong'a)
14:40 - 15:10
Formal hom-associative deformations of Ore extensions (Per Bäck)
15:10 - 15:30
Coffee break
15:30 - 16:00
Centralizers in Skew PBW Extensions (Alex Tumwesigye)


  • Joakim Arnlind (Linköping University)
  • Per Bäck (Mälardalen University)
  • Kwalombota Ilwale (Linköping University)
  • Daniel Lännström (Blekinge Institute of Technology)
  • Melanija Mitrovic (University of Nis)
  • Patrik Nystedt (University West)
  • Elvice Ongonga (Mälardalen University)
  • Johan Richter (Blekinge Institute of Technology)
  • Sergei Silvestrov (Mälardalen University)
  • Axel Tiger Norkvist (Linköping University)
  • Alex Tumwesigye (Makerere University)
  • Stefan Wagner (Blekinge Institute of Technology)
  • Johan Öinert (Blekinge Institute of Technology)