{"version":"1.0","type":"link","title":"Fitch notation - Newikis","description":"Fitch notation, also known as Fitch diagrams (named after Frederic Fitch), is a method of presenting natural deduction proofs in propositional calculus and first-order logics using a structured, line-by-line format that explicitly shows assumptions, inferences, and their scope. It was invented by…","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400}