Hariolf Betz studied Computer Science and Philosophy at the University of Ulm. Early on, he developed a keen interest in the logical foundations of programming. He was granted a state-funded scholarship to pursue his PhD. He currently works as a software engineer and IT consultant. His professional interests include mathematical modelling, distributed software architecture, natural user interfaces and real-life applications of constraint programming.
Thom Frühwirth is a professor of Computer Science at the University of Ulm, Germany. His research areas are Computational Logic and Constraint Programming. He is the designer of the logical formalism and programming language Constraint Handling Rules.http://www.constraint-handling-rules.org
The editor Uwe Schöning is a professor of Theoretical Computer Science at the University of Ulm, Germany. He introduced the low and high hierarchies to structural complexity theory to describe the internal structure of the complexity class NP. Later, he invented a much-cited SAT-Algorithm. He has also authored several popular textbooks on Logic in Computer Science.