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Soundness vs Unsound - What's the difference?

soundness | unsound |

As a noun soundness

is (uncountable) the state or quality of being sound.

As an adjective unsound is

not sound; not whole; not solid; defective; infirm; diseased.

soundness

English

Noun

  • (uncountable) The state or quality of being sound.
  • (countable) The result or product of being sound.
  • (logic) The property (of an argument) of not only being valid, but also of having true premises.
  • (logic) The property of a logical theory that whenever a wff is a theorem then it must also be valid. Symbolically, letting T'' represent a theory within logic ''L'', this can be represented as the property that whenever T \vdash \phi is true, then T \vDash \phi must also be true, for any wff ''φ'' of logic ''L .

    • unsound

    English

    Adjective

    (en-adj)
  • Not sound; not whole; not solid; defective; infirm; diseased.
  • In horse management an unsound horse is one suffering ill-health that affects its suitability for its intended work.
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    • Antonyms

    * sound