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Xem thêm: bridge to abstract math - mathematical proof and structures, 1st ed. - r. morash, bridge to abstract math - mathematical proof and structures, 1st ed. - r. morash, 2 Tautology, Equivalence, the Conditional,and Biconditional and Biconditional, 4 Analysis of Arguments for Logical Validity, Part I (Optional), 5 Analysis of Arguments for Logical Validity, Part I1 (Optional), 1 Conclusions Involving ∀, but Not ∃ or →. Proof by Transitivity, 2 Conclusions Involving ∀ and →, but Not ∃, 1 Conclusions Involving ∀, Followed by ∃ (Epsilon-Delta Proofs Optional), 2 More on Functions and Mappings - Surjections, Bijections, Image, and Inverse Image