RT Journal Article T1 A flexible logic-based approach to closeness using order of magnitude qualitative reasoning. A1 Burrieza-Muñiz, Alfredo A1 Muñoz-Velasco, Emilio José A1 Ojeda-Aciego, Manuel K1 Lógica K1 Razonamiento cualitativo AB In this paper, we focus on a logical approach to the important notion of closeness, which has not received much attention in the literature. Our notion of closeness is based on the so-called proximity intervals, which will be used to decide the elements that are close to each other. Some of the intuitions of this definition are explained on the basis of examples. We prove the decidability of the recently introduced multimodal logic for closeness and, then, we show some capabilities of the logic with respect to expressivity in order to denote particular positions of the proximity intervals. PB Oxford Academic YR 2020 FD 2020 LK https://hdl.handle.net/10630/36368 UL https://hdl.handle.net/10630/36368 LA eng NO Alfredo Burrieza, Emilio Muñoz-Velasco, Manuel Ojeda-Aciego, A flexible logic-based approach to closeness using order of magnitude qualitative reasoning, Logic Journal of the IGPL, Volume 28, Issue 1, February 2020, Pages 121–133, https://doi.org/10.1093/jigpal/jzz076 NO https://openpolicyfinder.jisc.ac.uk/id/publication/664 NO Partially supported by the Spanish research project TIN15-70266-C2-P-1 DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 3 feb 2026