Resumen: Alan L. Selman (1941 - 2021) was a former Editor-in-Chief of the journal Theory of Computing Systems. To commemorate his extraordinary contributions to theoretical computer science, we solicited papers from the theory community. Nine groups responded to the call, which we present in this issue... Idioma: Inglés DOI: 10.1007/s00224-023-10123-1 Año: 2023 Publicado en: THEORY OF COMPUTING SYSTEMS 67, 3 (2023), 415-416 ISSN: 1432-4350 Factor impacto JCR: 0.6 (2023) Categ. JCR: MATHEMATICS rank: 264 / 490 = 0.539 (2023) - Q3 - T2 Categ. JCR: COMPUTER SCIENCE, THEORY & METHODS rank: 117 / 144 = 0.812 (2023) - Q4 - T3 Factor impacto CITESCORE: 1.9 - Theoretical Computer Science (Q3) - Computational Theory and Mathematics (Q3)