A classic logic puzzle setting where inhabitants are either truth-telling knights or lying knaves. These scenarios test deductive reasoning skills…
The "is" of identity refers to the verb "is" used to express numerical identity between two distinct entities. It asserts…
An I-proposition, in traditional logic, is a particular affirmative categorical statement. It asserts that at least some members of the…
A deductive argument that doesn't logically guarantee its conclusion. It's flawed in structure, meaning the premises, even if true, don't…
An invalid argument is one where the conclusion does not logically follow from its premises, even if the premises are…
Mathematics built on intuitionistic logic, prioritizing constructive proofs and avoiding non-constructive axioms like the law of excluded middle. It emphasizes…
Intuitionistic logic, a constructive approach to reasoning, diverges from classical logic by rejecting the law of excluded middle. It demands…
An introduction rule in logic defines how to logically infer a connective within a proof. It's a fundamental concept in…
Interrogative logic, also known as erotetic logic, is the formal study of questions and reasoning involving them. It explores the…
A theorem stating that if A implies B is provable, a formula C exists using only common symbols. Both A…