Term logic, central to Aristotelian thought, analyzes propositions by focusing on the relationships between terms and the inferences derived from…
A syllogism features three key terms: the major term (conclusion's predicate), the minor term (conclusion's subject), and the middle term…
The syllogistic figure defines a syllogism's structure based on the middle term's placement. There are four distinct figures, each impacting…
Strong paraconsistency posits that contradictions can be genuinely true in some possible worlds. This contrasts with weak paraconsistency, which views…
Pluralism, particularly logical pluralism, suggests that there can be multiple, distinct, and equally valid logical systems. This challenges the traditional…
Peirce's law, ((P → Q) → P) → P, is a fundamental principle in logic. It is valid in classical…
These paradoxes highlight the counterintuitive nature of the material conditional in logic. They occur when the antecedent is false or…
Negation elimination is a fundamental rule in natural deduction. It permits inferring a conclusion by negating a premise, provided it…
A cornerstone of classical logic, the law of non-contradiction asserts that a statement and its negation cannot both be true…
Intermediate logic systems bridge the gap between intuitionistic and classical logic. They offer greater expressive power than intuitionistic logic while…