Carsten Elsner: received Ph.D. from Hannover University in 1990, habilitation from Hannover University in 1997, joined University of Applied Sciences (FHDW) in 2005 as Professor for Mathematics. His research areas are in number theory: continued fractions, Diophantine approximation, transcendental numbers and algebraic independence, recursions, special functions, but also, in universal differential equations. His teaching experience covers the following areas: number theory, approximation theory, combinatorics, mathematics for engineers and computer science students, cryptography, actuarial science, theory of automata, and Petri nets.
Christopher Robin Havens: is the founder of the Prison Mathematics Project (www.prisonmathproject.org), working towards the dissemination and popularization of math to marginalized groups within restrictive environments. His research interests are in the theory of computation and Diophantine analysis in the context of continued fractions.