The material biconditional, or "if and only if" (iff), is a logical operator true when both operands share the same…
A major connective, also known as a dominant connective, is a crucial link or relationship within a system or structure.…
Logical implication is the relationship where one proposition's truth guarantees another's. Understanding this conditional link is fundamental in logic, reasoning,…
An intermediate logic derived from propositional logic by incorporating all instances of the weak excluded middle axiom. It is also…
Erotetic logic, also known as the logic of questions and answers, formalizes the study of interrogatives and their answers. It…
Explore Stephen Cole Kleene's three-valued logic system, K3. It introduces an 'undefined' truth value alongside true and false, offering a…
Joint denial, also known as NOR, is a logical connective. It is true only when both propositions it connects are…
The iteration theorem, also known as the Smn theorem, is a fundamental result in computability theory. It states that for…
Interrogative logic, also known as erotetic logic, is the formal study of questions and reasoning involving them. It explores the…
The principle of indiscernibility of identicals asserts that if two things are truly the same, they must possess all the…