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Ojeda Hernández, Manuel Cabrera, Inma P. Cordero-Ortega, Pablo 2022-04-22T11:59:24Z 2022-04-22T11:59:24Z 2022-04 Ojeda Hernández, Manuel ; Cabrera, Inma P. ; Cordero, Pablo. Quasi-closed elements in fuzzy posets. Journal of Computational and Applied Mathematics Volume 404, April 2022, 113390. https://doi.org/10.1016/j.cam.2021.113390 https://hdl.handle.net/10630/23965 10.1016/j.cam.2021.113390 We generalize the notion of quasi-closed element to fuzzy posets in two stages: First, in the crisp style in which each element in a given universe either is quasi-closed or not. Second, in the graded style by defining degrees to which an element is quasi-closed. We discuss the different possible definitions and comparing them with each other. Finally, we show that the most general one has good properties to be used when we have a complete fuzzy lattice as a frame. eng http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Attribution-NonCommercial-NoDerivatives 4.0 Internacional Álgebra Quasi-closed elements in fuzzy posets journal article