Proposition (disambiguation)

A proposition is a statement expressing something true or false.^[1][2]

Proposition may also refer to:

In logic and mathematics

• Propositional calculus (also propositional logic or sentential calculus) - a formal system in which formulae representing propositions can be manipulated. Contrast with Predicate calculus.
• Logic: In logic a proposition is a statement that is either true or false.
• Theorem#Terminology: a statement proven to be true, usually a simple result, less important than a theorem.

In philosophy

• Proposition (philosophy): in philosophy "proposition" can mean a statement, the meaning of that statement, or the family of universes in which that statement is true.

In political science

• Ballot measure
• Motion (democracy)
• Resolution (law)
• A point of debate
• California ballot proposition

In the scientific method

• Hypothesis
• Theory
• Thesis statement

In culture

• Value proposition, the promise of a value to be delivered
• Proposition bet, a bet made on a certain outcome
• The Proposition, a 2005 film written by Nick Cave
• The Proposition (1998 film)
• Propositions (album), a 1982 album by The Bar-Kays
• Propositioned, to be asked to have sex.

Proposed

Something is proposed if it is brought up for discussion.

Purported, purport, purports

Something is 'purported' if it is 'said by some people to be real or true, but not proved to be real or true'.^[3]

• So 'purported', 'purport', and 'purports' currently redirect here because of the similarity that a proposition can be either true or false.
• 'purported' can also mean 'alleged' - see Allegation
• 'purported' can also mean 'claimed' - see Claim, and Claim (legal)
• 'purported' can also mean 'asserted' - see Logical assertion, and the fallacy Proof by assertion
• 'purported', 'purport', and 'purports' originally redirected to the disambiguation article 'Meaning', perhaps because of the expression 'purported meaning'

References

1. "A statement of something to be discussed, proved, or explained." The New Merriam-Webster Dictionary, Merriam-Webster Publishers, 1969, ISBN 0877799008
2. A. G. Hamilton, Logic For Mathematicians, "... metatheorems are written in ordinary mathematical language. ... Generally speaking, our propositions are metatheorems." p. 31, Cambridge University Press, 1978, ISBN 0521292913.
3. "The Macmillan Dictionary, (British English) definition of 'purported'". Macmillan Publishers Limited. Retrieved 18 June 2013. purported: said by some people to be real or true, but not proved to be real or true.
   Note: their American English definition is the same