Predicate logic is a formal system in mathematical logic that extends propositional logic by dealing with predicates and quantifiers, allowing for the expression of statements involving variables and their relationships. It serves as a foundation for formal reasoning, enabling precise representations of assertions and facilitating rigorous proofs in various fields such as computer science and mathematics. By incorporating quantifiers like 'for all' and 'there exists', predicate logic enhances the capability to formulate complex arguments and reason about properties of objects in a logical framework.
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