# formal logic

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Related to formal logic: symbolic logic

## formal logic

*n.*

The study of the properties of deductive reasoning over propositions by abstraction and analysis of the form, rather than the content, of the propositions.

## formal logic

*n*

**1.**(Logic) Also called:

**symbolic logic**the study of systems of deductive argument in which symbols are used to represent precisely defined categories of expressions. Compare philosophical logic

**2.**(Logic) a specific formal system that can be interpreted as representing a fragment of natural argument

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Noun | 1. | formal logic - any logical system that abstracts the form of statements away from their content in order to establish abstract criteria of consistency and validityBoolean algebra, Boolean logic - a system of symbolic logic devised by George Boole; used in computers propositional calculus, propositional logic - a branch of symbolic logic dealing with propositions as units and with their combinations and the connectives that relate them functional calculus, predicate calculus - a system of symbolic logic that represents individuals and predicates and quantification over individuals (as well as the relations between propositions) modal logic - a system of logic whose formal properties resemble certain moral and epistemological concepts fuzzy logic - a form of mathematical logic in which truth can assume a continuum of values between 0 and 1 |

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