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Proposition (logic)

IN logic, a formal or natural language expression that can either be true or false.

Examples:

  • “true” → a proposition with the value true.
  • “2 + 3 = 5” → proposition with the value true.
  • “Paris is the capital of France.” → a proposition which is true.
  • “Japan is an island in the Atlantic ocean.” → a proposition which is false.
  • 2 + 3” → not a proposition, as it has a value (“5”) that is neither true nor false.
  • The longest river in Europe” → not a proposition, as it has a value (“Danube”) that is neither true nor false.

See also

About this site

Ad Hominem Info is a project to explain and categorize the most common systematic fallacies and fallacies. On this page, you will find a background article that briefly explains an important logical concept, which may be needed to better understand another article in this area.
For more information, please see the main category “logic

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