Notes: Brand New Item. Not shipped to AK, HI, APO, FPO, AE.
Grothendieck topoi.- Interpretation of the logic in categories.- Axioms and rules of inference valid in categories.- Boolean and heyting valued models.- Completeness.- Existence theorems on geometric morphisms of topoi.- Conceptual completeness.- Theories as categories.- Classifying topoi.- Corrections to first order categorical logic.