Bibliography about subject heading and facet classification. Graph and tassonomy. Propositional calculus and boundary logic. Conceptual graph and PRECIS : https://bertanimauro.github.io/Ranganathan_APUPA/
code about the theory of the repository
History in the time of S.R.Ranganathan and prolegomena part Q. The work starts by a file of Luca Giusti
C.S.Peirce and lattice
propositional calculus
Syllogism and boundary logic
Conceptual graph and PRECIS
All possible combinations of a word of 8 bit and a word of 16 bit