Zena M. Ariola is a Professor in the Department of Computer and Information Science at the University of Oregon. Zena received her Bachelor's degree from the University of Pisa and her Ph.D. from Harvard University. Her original research interests were in parallel architectures, specifically dataflow machines. The desire to better understand the dataflow model of computation lead to first working on term graph rewriting, then on lambda-calculus and classical logic.
In 2002, in collaboration with Hugo Herbelin from INRIA, started the Oregon Programming Languages Summer School (OPLSS), which provides students a unique opportunity to study relevant background and cutting-edge results in the field of programming languages research. By establishing and running OPLSS, Zena received the 2018 SIGPLAN Distinguished Service Award.

Elaine Pimentel is a full professor at the Math Department UFRN, Brazil. She has held visiting research positions at TU-Wien and LIX-École Polytechnique. She is the coordinator of Brazilian research and extension projects, including POTIMÁTICAS, that aims at encouraging girls to study Mathematics. Also, she is part of the European research project MOSAIC, member of the steering committee of TABLEAUX and one of the Ambassadors of Logic of the World Logic Day 2021 (organised by the VCLA at TU Wien). Her main research area is Mathematical Logic, with special interest in several aspects of Proof Theory, including: specification and verification of logical systems, game semantics, ecumenical logics, focused systems and polarities.