Ben Fine is Professor of Mathematics and Statistics at Fairfield University. He received his Ph.D. from Courant Institute in 1973. He has had visiting positions at Yale University, University of California, NYU and TU Dortmund. Anja Moldenhauer received her Ph.D. from the University of Hamburg. Her research focus lies on Mathematical Cryptology using Combinatorial Group Theory. Since 2017 she is working as a data scientist. Gerhard Rosenberger did his doctorate in Analytic Number Theory and habilitated in Combinatorial Group Theory. Worldwide he has worked for longer terms at nine universities. At present he is at the University of Hamburg. Annika Schürenberg studied Mathematics, Physics and German and received her teaching degree from the University of Hamburg. Since 2020 she is working as a teacher at an elementary school. Leonard Wienke received his master degree from the University of Hamburg and is currently a Ph.D. student at the University of Bremen. His research focus lies on Combinatorial Algebraic Topology.