necessary truth

Validity and necessary truths

Post author:Emil O. W. Kirkegaard
Post published:12. August 2009
Post category:Logic
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Validity is defined in a couple of ways. I like to define it like this: An argument is valid iff the superconjunction1 of all the premises and the negation of…

Truth tables and necessary truths

Post author:Emil O. W. Kirkegaard
Post published:12. August 2009
Post category:Logic
Post comments:0 Comments

In the essay Validity and necessary truths I used truth tables with necessary truths and impossibilities in it. I did it like this: P □Q P→□Q T T T F…