Fenrong Liu, Distinguished Changjiang professor, Department of Philosophy, Tsinghua University, China. She is known by her works in preference dynamics and social epistemic logics, with numerous high quality publications in these areas. Hiroakira Ono, Emeritus professor, Japan Advanced Institute of Science and Technology, Japan. He has been working in nonclassical logic, in particular, substructural logics and superintuitionistic logics, using both proof-theoretic and algebraic methods.Junhua Yu has been working in (structural) proof theory and its applications in constructive semantics, neighborhood logics, and logics with fixed-points.