Notes 1-23

Notes 1-23 - Valid Argument Fred is Tall Fred= Joey Joey is...

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Jan. 23 Argument is a process that discovers the validity of a statement Valid? Yes No Proof Counter Example Formal Informal Implicit reasoning Make into explicit reasoning Truth of premises must guarantee the conclusion If it does not, give the counter example Counter Examples can be constructed and represented using Tarski’s world
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Unformatted text preview: Valid Argument Fred is Tall Fred= Joey Joey is Tall Natural Deduction Intro N=N Elimination P(n) N=M P(m) Doesn’t work if the first statement speaks about the second part of the = statement First you must prove that M= N… P(m) N=M N=N : Identity Introduction M=N: Identity Elimination P(N)...
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Notes 1-23 - Valid Argument Fred is Tall Fred= Joey Joey is...

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