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formal logic …is said to be a monadic, or one-place, predicate (variable). Predicates with two or more arguments stand not for properties of single individuals but for relations between individuals. Thus the proposition “Tom is a son of John” is analyzable into two names of individuals (“Tom” and “John”) and a dyadic…
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Monadic predicate calculus

In logic, the monadic predicate calculus is the fragment of first-order logic in which all relation symbols in the signature are monadic, and there are no function symbols. All atomic formulas are thus of the form P(x), where P is a relation... Wikipedia
Monadic second-order logic allows predicates of higher arity in formulas, but restricts second-order quantification to unary predicates, i.e. the only second- ...
Sometimes, the study of predicate logic is formally divided into monadic predicate logic (also called property logic) and polyadic predicate logic (also called ...
Mar 15, 2024 · The predicate calculus usually builds upon some form of the propositional calculus. It then proceeds to give a classification of the sentence ...
In mathematical logic, monadic second-order logic (MSO) is the fragment of second-order logic where the second-order quantification is limited to ...
In predicate logic, an interpretation is not merely an assignment of truth-values to sentence-letters, but also includes a specification of a nonempty domain ...
Predicates ascribe properties and relations to individuals. One-‐place ('monadic') predicates assign properties to single individuals. Examples: being human, ...
Monadic logic - Signature only monadic (unary) predicates. Theorem. The ... Let be a structure for the signature ежзийййжг - all ¦ are monadic predicate names.