Material Biconditional: Understanding the “If and Only If”
The material biconditional, or "if and only if" (iff), is a logical…
Major Connective
A major connective, also known as a dominant connective, is a crucial…
Logical Implication Explained
Logical implication is the relationship where one proposition's truth guarantees another's. Understanding…
Logic of Weak Excluded Middle (KC)
An intermediate logic derived from propositional logic by incorporating all instances of…
Logic of Questions and Answers (Erotetic Logic)
Erotetic logic, also known as the logic of questions and answers, formalizes…
Kleene’s Three-Valued Logic (K3)
Explore Stephen Cole Kleene's three-valued logic system, K3. It introduces an 'undefined'…
Joint Denial in Propositional Logic
Joint denial, also known as NOR, is a logical connective. It is…
Iteration Theorem
The iteration theorem, also known as the Smn theorem, is a fundamental…
Interrogative Logic (Erotetic Logic)
Interrogative logic, also known as erotetic logic, is the formal study of…
Indiscernibility of Identicals
The principle of indiscernibility of identicals asserts that if two things are…