The academic community of the Higher Technical School of Engineering at the University of Seville deeply regrets the passing of Professor of Applied Mathematics, Jorge Galán Vioque, which has caused immense sadness. Jorge was a professor at the ETSi for 30 years, since joining the Department of Applied Mathematics II as a University Assistant, where he obtained a full professorship in 2010. Previously, he taught at the Carlos III University of Madrid.

He also served as Deputy Director of Research in his department from 2002 to 2008, and as Deputy Director of the Institute of Mathematics at the University of Seville (IMUS) from 2008 to 2016, as part of the teams led by Luis Narváez and Justo Puerto. He played a substantial role in the establishment and launch of the Institute, particularly in the acquisition and subsequent operation of IMUS's first supercomputer. At the time of his death, he was a member of the University Senate representing Sector A of the School. As a researcher, he worked in diverse areas such as the study of the astronomical n-body problem, numerical continuation and bifurcations, the design of guidance and control algorithms for advanced satellite applications, and computational fluid mechanics.

During his research training, he undertook several research stays at the Department of Mathematical Engineering and Technology at the University of Bristol, the Department of Theoretical Physics at the University of California, Santa Barbara, etc. In addition to some 60 publications in top-level international journals, he gave numerous presentations at national and international conferences where he demonstrated his excellent communication skills.

It is worth highlighting the role played by Jorge in establishing scientific relationships between the Research Group in Dynamical Systems of the University of Seville, of which he was a part, with top-level international centers and departments in the field of Dynamical Systems.

Jorge led several statewide research projects, supervised four doctoral theses, and participated in the ERASMUS student mobility program and doctoral student research stays at the University of Bristol. He also organized various conferences and workshops at the University of Seville, where he supervised numerous undergraduate and master's theses of a multidisciplinary nature focused on the use of mathematics in engineering.

He also carried out numerous knowledge transfer activities with industry through collaborations with technology companies in the renewable energy and aerospace sectors. In the renewable energy sector, he worked on public-private partnership projects in concentrated solar power with companies such as Abengoa Solar New Technologies, Promat-Etex Group, Capsun Technologies BlueSolar, Sunntics, and Virtualmechanics, among others. He also collaborated with university research groups in diverse areas such as energy engineering, fluid mechanics, differential equations and numerical analysis, and mechanical engineering. In aerospace, specifically in satellite optimization, he collaborated with the Aerospace Engineering Department of the ETSI (School of Engineering) for companies such as Indra, Taitus Software, and Deimos Space.

Although his academic achievements were numerous, above all else, Jorge stood out for his human qualities, his ability to establish international relationships, his entrepreneurial spirit, and his decisive and courageous approach to new research topics and innovative projects, which led him to frequently face new scientific challenges. Jorge was

a born optimist, always willing to see the soluble side of problems and help in their resolution.

Jorge enjoyed his hobbies. A lover of sailing and paddle tennis, he will be remembered as a wonderful person, very family-oriented and warm, who always treated his colleagues, students, and coworkers with the utmost kindness. He leaves behind his beloved wife, Pilar, his daughters Lucía and Teresa, his son Jorge, and his two grandchildren, Niklas and Olivia, whom he adored.

We wish to extend our deepest condolences to his family, friends, and colleagues.

Jorge, sit tibi terra levis, rest in peace.