'Conditional proof' diaporamas de présentation

7.1 Rules of Implication I

7.1 Rules of Implication I. Natural Deduction is a method for deriving the conclusion of valid arguments expressed in the symbolism of propositional logic.

296 views • 26 slides

242 views • 16 slides

Chapter Five

Chapter Five. Conditional and Indirect Proofs. 1. Conditional Proofs. A conditional proof is a proof in which we assume the truth of one of the premises to show that if that premise is true then the argument displayed is valid.

263 views • 16 slides

Methods of Proof for Quantifiers

Language, Proof and Logic. Methods of Proof for Quantifiers. Chapter 12. 12.1. Valid quantifier steps. Universal elimination ( instantiation ): From ? xP(x) infer P(c). where c is the name of some object of the domain of discourse. Existential introduction ( generalization ):

547 views • 9 slides