Personal web page of Daniel Lännström

I am a mathematician (PhD 2021, BTH) currently working as an engineer at Saab AB. My research interests include Leavitt path algebras, non-commutative graded algebras and graded ring theory.

Contact information

Electronic mail: lannstrom 'at' posteo.net (professional inquiries)

Code repositories

Github

Teaching

Autumn 2024:	College Algebra (MATH1201) (online facilitator)
Spring 2024:	Mathematics 5 for Gymnasium (supervised student teacher)
Autumn 2023:	Mathematical Analysis 764G07 ht23 15hp (course responsible, main instructor)
	Foundation Course in Mathematics TATB01 ht23 6hp(instructor)
	Linear Algebra with Geometry TATA67 ht23 6hp(instructor)
Spring 2023:	Mathematics 4 for Foundation Year BML401 8hp (instructor)
	Calculus in One Variable 1 TATA41 vt23 6hp(instructor)
	Calculus in One Variable 2 TATA42 vt23 6hp(instructor)
	Calculus in Several Variables TATA43 vt23 8hp(instructor)
	Calculus in Several Variables TATA69 vt23 6hp(instructor)
Spring 2022:	Calculus 1 MA1444 vt22 6hp (main instructor)
	Cryptography 2 MA1491 vt22 6hp(instructor)
	Multivariable Calculus MA1447 vt22 6hp(course responsible, main instructor)
Autumn 2021:	Discrete Mathematics for Software Technology MA1484 ht21 7.5hp(course responsible, main instructor)
	Introduction to Mathematics MA1476 ht21 7.5hp (instructor)
	Linear algebra MA1485 ht21 7.5hp (instructor)
Autumn 2020:	Introduction to Mathematics MA1476 ht20 7.5hp (instructor)
	Introduction to Mathematics MA1476 ht20 7.5hp (instructor)
	Linear algebra MA1485 ht20 7.5hp (instructor)
Spring 2020:	Cryptography 2 MA1491 vt20 6hp(instructor)
Autumn 2019:	Introduction to Mathematics MA1476 ht19 7.5hp (instructor)
	Linear algebra MA1485 ht19 7.5hp (instructor)
	Linear algebra 1 MA1448 ht19 6hp (instructor)

Publications

[1] D. Lännström, P. Lundström, S. Wagner, and J. Öinert. Prime group graded rings with applications to partial crossed products and leavitt path algebras. Journal of Pure and Applied Algebra, 2025. doi: https://doi.org/10.1016/j.jpaa.2024.107842
[2] D. Lännström and J. Öinert. Graded von neumann regularity of rings graded by semigroups. Beiträge zur Algebra und Geometrie / Contributions to Algebra and Geometry, Nov. 2022. doi: 10.1007/s13366-022-00673-9.
[3] D. Lännström. A characterization of graded von Neumann regular rings with applications to Leavitt path algebras. Journal of Algebra, 567:91–113, 2021. doi: https://doi.org/10.1016/j.jalgebra.2020.09.022.
[4] D. Lännström. The graded structure of algebraic Cuntz-Pimsner rings. Journal of Pure and Applied Algebra, 224(9):106369, 2020. doi: https://doi.org/10.1016/j.jpaa.2020.106369.
[5] D. Lännström. Chain conditions for epsilon-strongly graded rings with applications to Leavitt path algebras. Algebras and Representation Theory, 23(4):1707–1726, 2019. doi: https://doi.org/10.1007/s10468-019-09909-0.
[6] D. Lännström. Induced quotient group gradings of epsilon-strongly graded rings. Journal of Algebra and Its Applications, 19(9):2050162, 2019. doi: https://doi.org/10.1142/S0219498820501625

Talks

“Graded von Neumann regularity of rings graded by semigroups” at SNAG 5, March 28, 2023, Västerås.
“Leavitt Path Algebras and graded rings” at the Linköping University Algebra Seminariars. March 9, 2023, Linköping.
“Prime Leavitt path algebras via nearly epsilon-strongly graded rings”, 3 December 2021, SNAG 4.
“Prime Leavitt path algebras via nearly epsilon-strongly graded rings”, 28 November 2021, Danish-Norwegian Operator Algebra Meeting, Trondheim.
“Leavittstigalgebror: deras gradering och några resultat om deras algebraiska struktur”, SMS Höstmöte 2021
PhD defense talk. September 1, 2021. Karlskrona, Sweden.
“Prime nearly epsilon-strongly graded rings” at the 3rd SNAG meeting. September 24-25, 2020. Online via zoom.
“Prime nearly epsilon-strongly graded rings” at the 17th South East Conference in Mathematics. August 25, 2020. Online via Zoom.
“Graded von Neumann regular rings” at the 2nd SNAG meeting. October 17-18, 2019, Karlskrona, Sweden.
“Graded von Neumann regular rings” at the 16th South East Conference in Mathematics. August 30, 2019, Karlskrona, Sweden.
Licentiate seminar talk. May 15, 2019. Karlskrona, Sweden.
“Epsilon-strongly graded rings” at the 1st annual BTH Ph.D. Student Workshop. May 10, 2019. Karlskrona, Sweden. Popular science presentation of my research for a general audience.
“Chain conditions on epsilon-strongly graded rings with applications to Leavitt path algebras” at the 1st SNAG meeting. September 27-28, 2018, Linköping, Sweden.
“Chain conditions on epsilon-strongly graded rings with applications to Leavitt path algebras” at the 15th South East Conference in Mathematics. August 28, 2018, Växjö, Sweden.

Education

PhD in mathematics from Blekinge Institute of Technology (1 Feb 2018 - 1 Sep 2021). PhD thesis.
MSc in Mathematics from Stockholm University (2009-2016). Master thesis and Bachelor thesis.

Update log

15 June 2025: Updated web page
6 May 2024: Updated web page
10 September 2021: Updated CV.
24 March 2021: Updated CV.
6 January 2021: Web page created.