In order to give unique co-extensive representation to each subject in the UoS, the classificationist has to ascertain the various attributes - infinite, turbulently dynamic, continuum, manifold multidimensional quality, different modes of formation of subjects, etc., in the UoS that affect library classification. While many of the above mentioned attributes are self-explanatory, the attribute "modes of formation of subjects" is complex and hence a detailed discussion is provided in this section.
The modes of formation of subjects that have been recognised are.
Lamination
Loose Assemblage
Fission
Fusion
Distillation
Clustering
Agglomeration
Details regarding each of the modes are discussed, in the succeeding sub-sections.