Validity

From Wikipedia, the free encyclopedia
Jump to: navigation, search

Validity is an idea that comes from logic. It is related to the concept of logical truth.

  • A valid formula is one that cannot be made false, no matter how the input parameters are chosen
  • A valid argument is one where the conclusion follow from the premises. If this is not the case, the argument is logically invalid.
  • An argument is valid if it is true, when its premises are true.