Validity (logic) | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-05-07

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Validity_(logic)


00:00:40 1 Arguments
00:04:55 2 Valid formula
00:05:20 3 Statements
00:05:39 4 Soundness
00:06:23 5 Satisfiability
00:07:03 6 Preservation
00:07:37 7 See also



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- Socrates


SUMMARY
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In logic, an argument is valid if and only if it takes a form that makes it impossible for the premises to be true and the conclusion nevertheless to be false. It is not required for a valid argument to have premises that are actually true, but to have premises that, if they were true, would guarantee the truth of the argument's conclusion. A formula is valid if and only if it is true under every interpretation, and an argument form (or schema) is valid if and only if every argument of that logical form is valid.