1: Propositional Logic Last updated Mar 10, 2021 Save as PDF Licensing 1.1: Developing a Precise Language Page ID16847 Craig DeLanceySUNY Oswego via OpenSUNY ( \newcommand{\kernel}{\mathrm{null}\,}\) 1.1: Developing a Precise Language1.2: “If…then….” and “It is not the case that….”1.3: Good Arguments1.4: Proofs1.5: “And”1.6: Conditional Derivations1.7: “Or”1.8: Reductio ad Absurdum1.9: “… if and only if …”, Using Theorems1.10: Summary of Propositional Logic