Suffix Notation (Reverse Polish Notation)
Suffix notation, also known as reverse Polish notation (RPN), places operators after…
The Successor Function in Arithmetic and Logic
The successor function, denoted S(n) = n + 1, is a foundational…
Subtheory: Understanding Theories Within Theories
A subtheory is a specialized theory nested within a broader one. It…
Substructural Logic
Substructural logics are non-classical systems that alter or remove structural rules of…
Substitutional Quantifier
A substitutional quantifier ranges over expressions or names, not objects. It's crucial…
Substitution Instance in Logic
A substitution instance is the result of replacing variables in a well-formed…
Substitution in Logic
Substitution is the fundamental act of replacing variables or expressions in logical…
Subordinate Connective in Logic
A subordinate connective is a logical operator appearing within the scope of…
Sublogic: Understanding Subset Logical Systems
A sublogic is a logical system that forms a subset of a…
Sublanguage: Definition, Characteristics, and Applications
A sublanguage is a restricted subset of a larger language, featuring a…