Sublogic: Understanding Subset Logical Systems
A sublogic is a logical system that forms a subset of a…
Subformula in Logic
A subformula is a constituent part of a larger logical formula, sharing…
Strong Completeness in Logic
Strong completeness in logic means that if a formula is true in…
Strict Implication
Strict implication defines a relationship where the truth of the antecedent necessarily…
Skolem Normal Form in First-Order Logic
Skolem Normal Form (SNF) simplifies first-order logic by eliminating existential quantifiers. It…
Single Turnstile Symbol in Logic
The single turnstile (⊢) symbol in logic signifies syntactic entailment. It indicates…
Understanding Seriality in Relations and Logic
Seriality defines a property of relations, ensuring every element in the domain…
Sequent Calculus: A Formal System for Logical Deduction
Sequent calculus is a formal system for logical entailments, representing deductions as…
Sentential Logic
Sentential logic, also known as propositional logic, examines the relationships between complete…
Sentence Letters in Propositional Logic
Sentence letters, also known as propositional variables, are fundamental symbols in propositional…