Many-valued logic.

Multiple-conclusion logic / by: (Language materials, printed)

Many-valued logics / by: (Language materials, printed)

The many valued and non-monotonic turn in logic by: (Language materials, printed)

Vaguely defined objects : = representations, fuzzy sets, and nonclassical cardinality theory / by: (Language materials, printed)

Many-values logics by: (Language materials, printed)

Many-valued logic.

Nonmonotonic reasoning.

Cardinal numbers.

Fuzzy sets.