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00925njm 22002777a 4500 dc Ojeda Hernández, Manuel author Cabrera, Inma P. author Cordero-Ortega, Pablo author 2022-04 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. 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 Álgebra Quasi-closed elements in fuzzy posets