PD Dr. habil. Sven-Ake Wegner

Department of Mathematics
University of Hamburg
Bundesstraße 55
20146 Hamburg
Email: sven dot wegner at uni-hamburg dot de
Phone: +49 40 42838 5120
Office: 104
ORCID iD iconORCID: 0000-0001-8704-3182
Google Scholar Profile
Web of Science

Research Interests

Upcoming Events

Curriculum Vitae

since 10/2020 Tenured Research Fellow in Mathematics, University of Hamburg, Germany
07/2020 Habilitation in Mathematics with Birgit Jacob, University of Wuppertal, Germany
07-09/2019 Invited Researcher at IHES, Paris, France
01/2018-09/2020 Senior Lecturer in Mathematics, Teesside University, Middlesbrough, UK
08/2015-07/2016 Assistant Professor, Nazarbayev University, Astana, Kazakhstan
09-10/2014 ERASMUS+ Fellow at the Adam Mickiewicz University, Poznań, Poland
09/2013-03/2014 DAAD Fellow at the Sobolev Institute of Mathematics, Novosibirsk, Russia
10/2010-01/2018 Research Associate with Birgit Jacob (temporarily on leave), University of Wuppertal, Germany
06/2010 PhD in Mathematics with José Bonet, Polytechnic University of Valencia, Spain
04/2007-09/2010 Research Assistant with Helge Glöckner and Klaus D. Bierstedt, University of Paderborn, Germany
03/2007 MSc in Mathematics with Klaus D. Bierstedt, University of Paderborn, Germany


31. C. von Renesse, S.-A. Wegner (2022)
Two examples of ungrading in higher education from the United States and from Germany
arXiv: 2209.14240, 23 pages

Journal Publications

30. R. Henrard, S. Kvamme, A.-C. van Roosmalen and S.-A. Wegner (2022)
The left heart and exact hull of an additive regular category
Rev. Mat. Iberoam., 56 pages, to appear, DOI 10.4171/RMI/1388
29. M. Lawson and S.-A. Wegner (2022)
The category of Silva spaces is not integral
Homology, Homotopy and Applications, 8 pages, to appear
28. C. Budde and S.-A. Wegner (2022)
A Lumer-Phillips type generation theorem for bi-continuous semigroups
Zeitschrift für Analysis und ihre Anwendungen 41, no. 1-2, 65-80, DOI: 10.4171/ZAA/1695
27. S. Hassoun, A. Shah and S.-A. Wegner (2021)
Examples and non-examples of integral categories and the admissible intersection property
Cahiers Topologie Géom. Différentielle Catég. 62, no. 3, 329-354
26. M. Waurick and S.-A. Wegner (2020)
Dissipative extensions and port-Hamiltonian operators on networks
J. Diff. Equat. 269, no. 9, 6830-6874, DOI: 10.1016/j.jde.2020.05.014
25. B. Jacob and S.-A. Wegner (2019)
Well-posedness of a class of hyperbolic partial differential equations on the semi-axis
J. Evol. Equat. 19, no. 4, 1111-1147, DOI: 10.1007/s00028-019-00507-7
24. M. Waurick and S.-A. Wegner (2018)
Some remarks on the notions of boundary systems and boundary triple(t)s
Math. Nachr. 291, no. 16, 2489-2497, DOI: 10.1002/mana.201700417
23. C. Bargetz and S.-A. Wegner (2018)
Pivot duality of universal interpolation and extrapolation spaces
J. Math. Anal. Appl. 460, no. 1, 321-331, DOI: 10.1016/j.jmaa.2017.11.042
22. S.-A. Wegner (2017)
Boundary triplets for skew-symmetric operators and the generation of strongly continuous semigroups
Analysis Mathematica 43, no. 4, 657-686, DOI: 10.1007/s10476-017-0509-6
21. S.-A. Wegner (2017)
The heart of the Banach spaces
J. Pure Appl. Algebra, 221, no. 11, 2880-2909, DOI: 10.1016/j.jpaa.2017.02.006
20. B. Farkas and S.-A. Wegner (2016)
Variations on Barbălat's Lemma
Amer. Math. Monthly 128, no. 8, 825-830, DOI: 10.4169/amer.math.monthly.123.8.825
19. S.-A. Wegner (2016)
The growth bound for strongly continuous semigroups on Fréchet spaces
Proc. Edinb. Math. Soc. 59, no. 3, 801-810, DOI:10.1017/S0013091515000310
18. A. Golińska and S.-A. Wegner (2016)
Non-power bounded generators of strongly continuous semigroups
J. Math. Anal. Appl. 436, no. 1, 429-438. DOI:10.1016/j.jmaa.2015.12.015
17. B. Jacob and S.-A. Wegner (2015)
Asymptotics of evolution equations beyond Banach spaces
Semigroup Forum 91, no. 2, 347-377, DOI: 10.1007/s00233-014-9659-z
16. B. Jacob, S.-A. Wegner and J. Wintermayr (2015)
Desch-Schappacher perturbation of one-parameter semigroups on locally convex spaces
Math. Nachr. 288, no. 8-9, 925-934, DOI: 10.1002/mana.201400116
15. L. Minder, T. Sauerwald and S.-A. Wegner (2015)
Asymptotic bounds on the equilateral dimension of hypercubes
Graphs Combin. 31, no. 5, 1629-1636. DOI: 10.1007/s00373-014-1473-6
14. Ya. Kopylov and S.-A. Wegner (2014)
Exact couples in semiabelian categories revisited
J. Algebra 414, 264-270. DOI: 10.1016/j.jalgebra.2014.04.030
13. S.-A. Wegner (2014)
Universal extrapolation spaces for C0-semigroups
Ann. Univ. Ferrara 60, no. 2, 447-463, DOI: 10.1007/s11565-013-0189-5
12. Ya. Kopylov and S.-A. Wegner (2012)
On the notion of a semi-abelian category in the sense of Palamodov
Appl. Categor. Struct. 20, no. 5, 531-541. DOI: 10.1007/s10485-011-9249-0
11. S.-A. Wegner (2012)
PLB-spaces of holomorphic functions with logarithmic growth conditions
Arch. Math. (Basel) 98, no. 2, 163-172, DOI: 10.1007/s00013-011-0339-x
10. S.-A. Wegner (2011)
Projective limits of weighted LB-spaces of holomorphic functions
J. Math. Anal. Appl. 383, no. 2, 409-422. DOI: 10.1016/j.jmaa.2011.05.033
9. D. Sieg and S.-A. Wegner (2011)
Maximal exact structures on additive categories
Math. Nachr. 284, no. 16, 2093-2100, DOI: 10.1002/mana.200910154
8. J. Bonet and S.-A. Wegner (2011)
Bornological projective limits of inductive limits of normed spaces
Funct. Approx. Comment. Math. 44, no. 2, 227-242, DOI: 10.7169/facm/1308749126
7. S.-A. Wegner (2011)
Weighted PLB-spaces of continuous functions arising as tensor products of a Fréchet and a DF-space
Rev. R. Acad. Cien. Serie A. Mat. 105, no. 1, 85-96, DOI: 10.1007/s13398-011-0001-2
6b. S. Michaelis de Vasconcellos, S. Stufler, S.-A. Wegner, P. Ester, A. Zrenner and M. Bichler (2006)
Quantum interferences of a single quantum dot in the case of detuning (presented on the QD2006)
phys. stat. sol. (c) 3, No. 11, 3730-3733, DOI: 10.1002/pssc.200671585
6a. S. Michaelis de Vasconcellos, S. Stufler, S.-A. Wegner, P. Ester, A. Zrenner and M. Bichler (2006)
Quantum interferences of a single quantum dot in the case of detuning (journal version)
Phys. Rev. B 74, 081304(R), DOI: 10.1103/PhysRevB.74.081304

Mathematics Education

5. G. Passias and S.-A. Wegner (2021)
On a counterexample in connection with the Picard-Lindelöf Theorem
College Math. J. 52, no. 3, 221-223, DOI:10.1080/07468342.2021.1909978
4. T. Pawlaschyk and S.-A. Wegner (2020)
Engaging students in conjecturing through homework in Real Analysis and Differential Equations
Int. J. Math. Educ. Sci. Technol. 51, no. 3, 439-450, DOI:10.1080/0020739X.2019.1656832
3. S. Beumann and S.-A. Wegner (2018)
An outlook on self-assessment of homework assignments in higher mathematics education
Int. J. STEM Edu. 5, no. 55, 1-7, DOI: 10.1186/s40594-018-0146-z
2. K. Rolka and S.-A. Wegner (2018)
An open day in the metric space
Teaching Mathematics and its Applications 37, no. 3, 155-162, DOI: 10.1093/teamat/hrw025
1. S.-A. Wegner (2014)
A workshop for high school students on naive set theory
Eur. J. Sci. Math. Edu. 2, no. 4, 193-201

Lecture Notes

0. S.-A. Wegner (2021)
Lecture notes on high-dimensional data
arXiv: 2101.05841, 57 pages




Posters of conferences and seminars that I co-organized

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