ABSTRACT
The formal concept analysis, FCA, is a theory of data analysis which identifi es conceptual structures among data sets (Ganter and Wille 1999).
The mathematical methodology of FCA emerged within the community of set and order theorists, algebraists and discrete mathematicians. The aim was to fi nd a new, concrete and meaningful approach to the understanding of complete lattices. The fact that every complete lattice can be represented as a hierarchy of concepts, which were conceived as sets of objects sharing a maximal set of attributes, proved to be fruitful.
