RIP Paul Steen (?? – 2020)

I received the sad news early today that Cornell Professor Paul Steen died on Friday.

I took a class on bifurcation theory from Paul, who was very supportive. My class project, in which I needed to use AUTO (an important aspect of the course), led to this publication.

Here is an excerpt from the Acknowledgements section:

Additionally, we express our gratitude toward Alan Champneys for several productive suggestions regarding the numerics, Alejandro Rodríguez-Luis for providing a preprint of his manuscript, and Paul Steen, whose guidance for this work as a project for ChE 753 (on which this paper is based) was particularly valuable.