Fuzzy propositional logic and two-sided (intuitionistic) fuzzy propositions

The propositional logic structure is summarized and the logical properties are discussed. Different forms of fuzzy propositional expressions are investigated. Simplifications and conversions between logical expressions are investigated; exact equality and approximate of these conversions are discussed. The logical structure of intuitionistic (two-sided) fuzzy sets are studied in the framework of fuzzy propositional algebra.