Logic 240 Philosophy 142 Logic, Symbolic and mathematical 133 Mathematics 58 Mathematical logic-- Mathematics 54 Fuzzy logic 52 Logic circuits, logic design of circuits, very large scale integration (VLSI) 33 Logic circuits 24 Language and languages 22 Logic design 21 Reasoning 21 Science 20 Symbolic logic 17 Knowledge, Theory of 16 Modality (Logic) 16 Set theory 16 Digital electronics 15 History 15 Language and logic 15 Induction (Logic) 14 Proposition (Logic) 13 Semantics (Philosophy) 13 Fuzzy sets 12 Hindu logic 12 Mathematical logic 12 Probabilities 12 Buddhist logic 11 Methodology 11 Algebraic logic 10 Electronic digital computers 10