Department of
Applied Mathematics
and Computer Science
DTU
DK2800 Kgs. Lyngby
pghj@dtu.dk


Personal
Danish citizen, * October 8., 1955, Næstved, Denmark.
Employment
Education
1988: Ph.D. (mathematical physics) University of California, San
Diego. Thesis: A Many Particle Adiabatic Invariant in
Strongly Magnetized Pure Electron Plasmas.
1983: Master of Science (MSc). University of California, San
Diego.
1982: Cand. scient., (mathematics) University of Copenhagen. Thesis: Time Evolution and Path Integrals in
Schrödinger Quantum Mechanics.
Recent Activities
Recent Papers
The Numbers Lead a Dance in: Partial Differential Equations, Mathematical Physics, and Stochastic Analysis, EMS Congress Reports (2017)
EquationFree Analysis of Macroscopic Behavior in Traffic and Pedestrian
Flow in: Traffic and Granular Flows (Chrabi and Boltes, eds.)
Springer Verlag, ISBN 9783319106281 (2014)
Equationfree Detection and Continuation of a Hopf bifurcation Point in a
Particle Model of Pedestrian Flow (with O. Corradi and J. Starke),
SIAM Journal of Applied Dynamical Systems, 11, 3 (2012).
A fairly complete list of publications
Books
Dynamics on the Riemann Sphere (with C. Lunde
Petersen), European Mathematical Society Publishing (2006).
Elements of Newtonian Mechanics (with J. M. Knudsen),
3rd edition, 2. printing [Springer Verlag, 2002].
Real and Complex Dynamical Systems, (with B.Branner,
editors). Real and Complex Dynamical Systems, NATO Advanced
Study Institute, Hillerød 1993. [Kluwer, 1995]
 