Gradation of Fuzzy Preconcept Lattices

Noticing certain limitations of concept lattices in the fuzzy context, especially view their practical applications, this paper, we propose a more general approach based on what call graded preconcept lattices. We believe that is adequate for dealing with information then one consider two possible gradation methods lattice—an inner one, called D-gradation and an outer M-gradation, study properties, illustrate by series examples, particular, nature.