Reductio Ad Absurdum: Arguing to Absurdity
Reductio ad absurdum is a logical argument proving a statement false by…
Negation Introduction Rule in Natural Deduction
Negation introduction is a natural deduction rule enabling the derivation of negation.…
Negation Elimination in Natural Deduction
Negation elimination is a fundamental rule in natural deduction. It permits inferring…
Falsum: Understanding Logical Falsity
Falsum, symbolized as ⊥, represents absolute falsity or a contradiction in logic.…
Consequentia Mirabilis: The Principle of Indirect Proof
Consequentia mirabilis, a classical logic principle, asserts that if the negation of…