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The propositional calculus [a] is a branch of logic. [1] It is also called propositional logic, [2] statement logic, [1] sentential calculus, [3] sentential logic, [4] [1] or sometimes zeroth-order logic. [b] [6] [7] [8] Sometimes, it is called first-order propositional logic [9] to contrast it with System F, but it should not be confused with ...
In propositional calculus, a propositional function or a predicate is a sentence expressed in a way that would assume the value of true or false, except that within the sentence there is a variable (x) that is not defined or specified (thus being a free variable), which leaves the statement undetermined.
A proposition is also a popular initiative, viz a measure or proposed legislation "proposed" to the members of a legislature or to voters, in a direct popular plebiscite, for their approval. In the US American phenomenon of popular plebiscites, propositions can take the form of an initiative or a referendum; for example, see the list of ...
The predicate calculus goes a step further than the propositional calculus to an "analysis of the inner structure of propositions" [4] It breaks a simple sentence down into two parts (i) its subject (the object (singular or plural) of discourse) and (ii) a predicate (a verb or possibly verb-clause that asserts a quality or attribute of the object(s)).
The Idaho Supreme Court pointed out this distinction in a ruling last year, and Republican officials have claimed that Proposition 1 proponents’ description of an “open” primary is subterfuge.
In logic, a set of symbols is commonly used to express logical representation. The following table lists many common symbols, together with their name, how they should be read out loud, and the related field of mathematics.
Proposition 1, the only statewide initiative on the March 5 ballot, is also one of the most complicated and lengthy measures in recent years. It takes up 68 pages of the 112-page voter information ...
Proposition 5 aims to make it easier to pass local bond measures for affordable housing, transportation, parks and other infrastructure. What will the measure do?