Jan Sieber

Short bio

Current and Previous Appointments, PhD
Since 2016 Associate Professor in Mathematics, University of Exeter
2001-2016 University of Portsmouth (UK), University of Aberdeen (UK), University of Bristol (UK),
Humboldt University of Berlin (Germany)
2001 PhD in Mathematics, Humboldt University of Berlin (Germany), Supervisors: L. Recke,
K.R. Schneider

Research area:

Applications of Dynamical Systems
(overall 56 publications, see http://empslocal.ex.ac.uk/people/staff/js543)
Tracking dynamically unstable phenomena in experiments
These methodologies have been taken up by experimenters in mechanical and civil engineering,
cell biology and fluid dynamics. The EPSRC (UK) Fellowship 2017-2021 expanded
the scope of these methods to applications in complex systems in other areas such tipping
points in Climate Science and Ecology.
Generic stabilizability for time-delayed feedback control. PRSA 472 (2016),
Controlling unstable chaos: Stabilizing chimera states by feedback. PRL. 112 (2014),
Experimental continuation of periodic orbits through a fold. PRL. 100 (2008).
Dynamical systems with delay
Rigorous mathematical results have informed contribution to development of the opensource
software DDE-Biftool, which is widely used in the community (7,450 downloads
since 2015).
Temporal dissipative solitons in time-delay feedback systems. PRL 123 (2019).
Finding periodic orbits in state-dependent delay differential equations as roots of algebraic
equations. DCDS-A 32 (2012).

PhD students and Postdoctoral Researchers supervised
PhD students Paul D. L. Ritchie (graduated 2016), Courtney Quinn (2019), Robert E. Carroll, Asim
Alawfi, John Osei
Postdocs Patricia Verrier (2011-2013), Ozkan Karabacak (2017-2018), Bert Wuyts (since 2018)

Public Support and Recognition
EPRSC (UK)
funding
Fellowship Exploring instability in complex systems 2017-2021, Grant Control-based Bifurcation
Analysis for Experiments, 2012-2014
EU funding ITN Critical Transitions in Complex Systems, 2015-2019, H2020 Project Tipping Points in
Earth Systems, 2019-2023
2016 Plenary lecture at XXXVI European Dynamics Days, Corfu (Greece) 2016
2010-2021 Associate Editor on Editorial Board, SIAM Journal on Applied Dynamical Systems
Member of LMS, SIAM