A tribute to José Manuel Valença

The present Special Issue of the Journal of Logical and Algebraic Methods in Programming was planned as a tribute to Jose Manuel Esgalhado Valenca on the occasion of his Jubilation. A tribute to a professor, in the deepest sense of the word, a colleague and a friend, but above all to a long and inspiring academic journey that has so profoundly shaped the development of Informatics as a scientific area in Portugal. A scientific area that, as he taught us, needs to be understood broadly: not only as an independent research domain, but also as an educational pillar, a strategy for social and economic development, a foundation for a multifaceted professional career. This preface introduces some steps of such a journey. The Special Issue features a selection of scientific papers written by his collaborators, colleagues and friends, covering the different areas Jose Valenca helped to launch and consolidate in Portugal, namely computational logic, verification and mechanized reasoning, and information security. (c) 2022 Published by Elsevier Inc.- The editors would like to thank all the authors who contributed to this special issue celebrating the academic career and scientific achievements of Jose Manuel Esgalhado Valenca on the occasion of his Jubilation. Thanks also to all the reviewers who generously provided their valuable time and expertise, in support for this special issue. Finally, we would like to thank the editors of JLAMP for their support throughout the entire editorial process