Alexander Lohse
Address
Nationality
Universität Hamburg
Fachbereich Mathematik
Bundesstraße 55
20146 Hamburg, Germany
German
Phone
Email
Web
+49 40 42838 5153
[email protected]
www.math.uni-hamburg.de/home/lohse
Current position
10/2015-now
Postdoc (with Prof R. Lauterbach), Fachbereich Mathematik, Universität Hamburg, Germany
Education and previous academic positions
04/2015-09/2015 Postdoc (with Prof S. Castro), Centro de Matemática, Universidade do Porto, Portugal
07/2014-03/2015 Postdoc (with Prof R. Lauterbach), Fachbereich Mathematik, Universität Hamburg, Germany
10/2010-06/2014 PhD student, Fachbereich Mathematik, Universität Hamburg, Germany
Degree: Dr. rer. nat. in Mathematics (summa cum laude), June 2014
Thesis: Attraction properties and non-asymptotic stability of simple heteroclinic cycles in R4
Supervisor: Prof Reiner Lauterbach
10/2005-09/2010 Undergraduate studies, Fachbereich Mathematik, Universität Hamburg, Germany
Degree: Diplom (very good), July 2010
Thesis: The GEOFLOW-experiment as a spherical bifurcation problem
Study abroad at the University of Auckland, New Zealand, 2007-2008
Non-academic positions
2005-2014
METCON, Umweltmeteorologische Beratung, Pinneberg, Germany
Scientific assistant with Dr Klaus Bigalke, employment period equivalent to two years full time
Meteorological consulting; development and compilation of synthetic dispersion class statistics
(SynAKS) and time series (SynRepAKTerm); conception, execution and interpretation of prognostic model calculations with the mesoscale model METRAS PC.
Computer models: METRAS PC, LASAT, AUSTAL2000.
Research interests
Equivariant dynamical systems: existence, dynamics and stability of heteroclinic cycles and networks;
bifurcation theory; chaotic dynamics
Mathematical modelling and topics in climate science/glaciology, especially stability related phenomena such as grounding line migration of ocean-terminating glaciers with ice sheets
Invited talks, conferences etc.
4th Bremen Winter School and Symposium: Dynamics, Chaos and Applications, 14-18 March 2016,
Bremen, Germany
8th Salon Kleiner Michel, 18 February 2016, Hamburg, Germany: Nichts als die Wahrheit (a talk to the
general public on Gödel’s incompleteness theorem)
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Workshop on Heteroclinic Phenomena: The Role of Symmetry, 12 February 2016, Universidade do
Porto, Portugal: Stability of simple and pseudo-simple heteroclinic cycles in R4
Workshop on Heteroclinic Dynamics in Neuroscience, 17 December 2015, University of Nice, France:
Dynamics near simple heteroclinic networks – dimension 5
Dynamical Systems Seminar, 2 October 2015, Universidade do Porto, Portugal: Switching in heteroclinic
networks with real eigenvalues
DMV annual meeting, 21-25 September 2015, Universität Hamburg, Germany: Existence and stability
of simple heteroclinic networks in R4 – part I (Section 3 – Differential equations and applications)
DMV annual meeting, 21-25 September 2015, Universität Hamburg, Germany: Introductory Talk (Minisymposium #12 – Heteroclinic dynamics: theory and applications)
AMS-EMS-SPM International Meeting, 10-13 June 2015, Universidade do Porto, Portugal: Existence and
stability of elementary heteroclinic networks in R4 (Special Session 26 – Heteroclinic cycles and networks: stability and dynamics)
Dynamical Systems Seminar, 17 April 2015, Universidade do Porto, Portugal: Existence and stability of
heteroclinic networks in R4
Dynamics Reading Group Exeter, 26 February 2015, University of Exeter, UK: Existence and stability of
elementary heteroclinic networks in R4
Dynamical Systems Seminar, 12 April 2013, Universidade do Porto, Portugal: Non-asymptotic stability
properties of type B heteroclinic cycles in R4
AIMS Conference on Dynamical Systems, Differential Equations and Applications, 1-5 July 2012, Orlando, USA: The stability index for heteroclinic cycles of type A∗
Workshop on Stability of Dynamical Systems, 27 March 2012, University of Exeter, UK: On relations
between the stability index and attraction properties of heteroclinic cycles
Workshop on Numerical Methods for Scale Interactions, 21-23 September 2011, Universität Hamburg,
Germany
Equadiff 2011, 1-5 August 2011, University of Loughborough, UK
Joint Seminar of UHH, TUHH and DESY on Dynamical Systems, 13 July 2011, Hamburg, Germany: Das
GEOFLOW-Experiment: ein sphärisches Verzweigungsproblem
Seminar on Aerodynamics and Fluid Dynamics, 3 June 2010, Brandenburgische Technische Universität
Cottbus, Germany: Eine mathematische Sicht auf GEOFLOW: Sphärische Verzweigungsprobleme
Interdisciplinary activities
3rd CliSAP Workshop Arctic and Permafrost, 24-26 February 2016, Universität Hamburg, Germany
Denial101x: Making sense of Climate Science Denial, May-June 2015, online course, University of Queensland, Australia
International Summer School in Glaciology, 6-16 August 2014, Wrangell Mountains Center, McCarthy,
Alaska, USA
AG-825 Glaciology course, February-March 2014, University Centre in Svalbard, Norway
Member of the Association of Early Career Polar Scientists (APECS), since 2014
HLRS Parallel Programming Workshop – MPI, OpenMP and PETSc for beginners, 29-31 July 2013, Technische Universität Hamburg-Harburg, Germany
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Teaching and other academic activities
Organisation of a mini-symposium on Heteroclinic Dynamics: Theory and Applications (jointly with
Sofia Castro) at the DMV (German Mathematical Society) annual conference, 21-25 September 2015,
Hamburg, Germany
Co-organisation of the Dynamical Systems Seminar, UHH, 2014/2015
Referee for Dynamical Systems: An International Journal, 2015
Teaching assistant for Analysis I-III, TUHH 2010-2016
Mathematical Modelling Week (for high school students), UHH 2010-2013
Teaching assistant for Differential Equations I, TUHH 2013/2014
Teaching assistant for Nonlinear Problems, UHH 2012
Assistant for a student competition (grades 7-13) at the annual Mathematics Day, UHH, 2012-2015
Assistant for organisation and execution of the biannual International Mathematics Tournament of the
Towns, Hamburg, 2011-2016
Teaching assistant with the William-Stern-Gesellschaft, Hamburg: special education of mathematically
talented students of grades 7-10, 2006-2008
Publications in peer-reviewed international journals and preprints
6. A. Rodrigues, A. Lohse: Boundary crisis for degenerate singular cycles, 2015.
5. S. Castro, A. Lohse: Construction of heteroclinic networks in R4 , arXiv:1504.05459 [math.DS], 2015.
4. S. Castro, A. Lohse: Switching in heteroclinic networks, arXiv:1510.00178 [math.DS], 2015.
3. A. Lohse: Stability of heteroclinic cycles in transverse bifurcations, Physica D 310, 95–103, 2015.
2. A. Lohse: Unstable attractors: existence and stability indices, Dynamical Systems 30(3), 324–332, 2015.
1. S. Castro, A. Lohse: Stability in simple heteroclinic networks in R4 , Dynamical Systems 29(4), 451–481,
2014.
Technical reports
2. K. Bigalke, M. Rau, K. Anke, F. Hüftle, A. Lohse: Synthetische Ausbreitungsklassenstatistiken SynAKS für
Deutschland, Berechnung – Qualitätssicherung – Anwendung, 2013 (www.metcon-umb.de/uploads/media/QSSynAKS-V-1.1_01.pdf)
1. K. Bigalke, M. Rau, K. Anke, F. Hüftle, A. Lohse: Synthetisch repräsentative Ausbreitungsklassenzeitreihen
SynRepAKTerm für Deutschland, Berechnung – Qualitätssicherung – Anwendung, 2013 (www.metconumb.de/uploads/media/QS-SynAKTerm_V-1.2.pdf)
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2015 Conference Schedule - Washington On