Logic/Propositional logic

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Logic > Propositional logic

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• Category:Mathematical logic（Wikipedia）

Propositional calculus

• Propositional calculus(logic) from Wikipedia, the free encyclopedia

In mathematical logic, a propositional calculus or logic (also called sentential calculus or sentential logic) is a formal system in which formulas of a formal language may be interpreted to represent propositions. A system of inference rules and axioms allows certain formulas to be derived. These derived formulas are called theorems and may be interpreted to be true propositions. Such a constructed sequence of formulas is known as a derivation or proof and the last formula of the sequence is the theorem. The derivation may be interpreted as proof of the proposition represented by the theorem.

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