Address: |
Department of Mathematics
The University of Auckland
Private Bag 92019
Auckland 1142
New Zealand |
Email: |
stefanie.hittmeyer (at) auckland.ac.nz |
Office: |
Building 303, Office 222 |
Phone: |
ext. 82025 (within university) or +64(0)99232025
(direct dial) |
Orcid: |
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I am a Research Fellow in Applied Mathematics at the
University of Auckland, specialising in
dynamical systems, chaos and bifurcation theory. My
research focuses on a higher-dimensional type of chaos
called “wild chaos”. My research aims to find the
geometric mechanisms that generate this abstract type of
chaos in explicit systems. Moreover, I study how this type
of chaos can be identified in applications by developing
advanced numerical methods for the computation of
invariant sets (such as stable and unstable manifolds) and
the identification and continuation of their
bifurcations. This type of dynamics can appear in
noninvertible maps of dimension at least two,
diffeomorphisms of dimension at least three and vector
fields of dimension at least four.
Biography
After finishing my Diploma degree in Mathematics at Bielefeld
University (Germany) in 2009, I started my PhD at the University of
Bristol (UK) with Hinke Osinga and Bernd Krauskopf in 2010. Together
with my supervisors I transferred to the University of Auckland in
2011, where I completed my PhD thesis in 2013. My name was put on the Graduate Dean’s list of excellent doctoral theses and I was suggested for the
Vice Chancellors Best Thesis Award in 2014. Furthermore my PhD research was
recognised by the Aitken Prize for the best student talk at the New Zealand
Mathematical Society Colloquium 2012. I started my current position as a Research Fellow
in Applied Mathematics at the University of Auckland in
2014. In addition to my research, I have been a lecturer for the courses “Differential Equations” (Maths260), “Great Ideas Shaping our
World” (Maths190) and “Numerical Computation” (Maths270).
Research Interests
Higher-dimensional chaos: wild chaos, blenders, heterodimensional cycles
Development of numerical methods for invariant sets and their bifurcations
Global bifurcations of diffeomorphisms and noninvertible maps, including nonanalytic maps
Generalised Julia and Mandelbrot sets in nonanalytic
maps
Applications in predator-prey dynamics
The topology of inverse limits