Stefan Wagner

Biträdande professor/Prodekan

Department of Mathematics and Natural Sciences, Room J3531

ABOUT ME

I am an associate professor in mathematics at the department of mathematics and natural sciences at BTH.

My research interests include noncommutative geometry, especially the noncommutative geometry of principal bundles, operator algebras, as well as infinite-dimensional Lie theory and its cohomology.
But I am also interested in more algebraic issues such as strongly graded rings and their interplay with various C*-algebraic constructions such as graph C*-algebras and groupoid C*-algebras.

Projects & Publications

Finished projects
Gender bias in higher education - a status quo review

Selected publications
An Atiyah sequence for noncommutative principal bundles, SIGMA 18 (2022), 015, 22 pages
Lifting spectral triples to noncommutative principal bundles, Adv. Math. 396 (2022), 108160
Part I, Free actions of compact Abelian groups on C*-algebras, Adv. Math. 317 (2017), 224-266
A geometric approach to noncommutative principal torus bundles, Proc. London Math. Soc. (2013) 106 (6), 1179-1222

Recent publications
Daniel Lännström, Patrik Lundström, Johan Öinert, Stefan Wagner, "Prime group graded rings with applications to partial crossed products and Leavitt path algebras", Journal of Pure and Applied Algebra, ISSN 0022-4049, EISSN 1873-1376, Vol. 229, nr 1, Elsevier, 2025
Johan Öinert, Stefan Wagner, "Complex group rings and group C ∗ -algebras of group extensions", Journal of Algebraic Combinatorics, ISSN 0925-9899, EISSN 1572-9192, Vol. 58, nr 2, pp. 387 - 397, Springer, 2023
Stefan Wagner, "The principle of minimal help", Blekinge Institute of Technology Best practice, EISSN 19000, EISSN 47, Blekinge Tekniska Högskola, 2023
Kay Schwieger, Stefan Wagner, "An Atiyah Sequence for Noncommutative Principal Bundles", Symmetry, Integrability and Geometry, EISSN 1815-0659, Vol. 18, pp. 1 - 22, NATL ACAD SCI UKRAINE, INST MATH, 2022
Kay Schwieger, Stefan Wagner, "Lifting spectral triples to noncommutative principal bundles", Advances in Mathematics, ISSN 0001-8708, EISSN 1090-2082, Vol. 396, Elsevier, 2022