The difference between Logical calculus and Predicate calculus
When used as nouns, logical calculus means a formal system, whereas predicate calculus means the branch of logic that deals with quantified statements such as "there exists an x such that..." or "for any x, it is the case that...", where x is a member of the domain of discourse.
check bellow for the other definitions of Logical calculus and Predicate calculus
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Logical calculus as a noun (logic):
A formal system.
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Predicate calculus as a noun (logic):
The branch of logic that deals with quantified statements such as "there exists an x such that..." or "for any x, it is the case that...", where x is a member of the domain of discourse.