http://dswarmsikhttkg7jgsoyfiqpj3ighupfrvuz5ri3lu5q2dlqyrpgk7ad.onion/notes/lsg.html
(Huth, Michael and Ryan, Mark, 2004) If the set of all wffs of a formal language \(L\) is exactly the same as the set of all wffs of a formal language \(L'\), then \(L\) is the same formal language as \(L'\). If not, not. (Geoffrey Hunter, 1971, p. 4) 13.2. \(\neg, \land, \lor, \to, \leftrightarrow\) Negation (not), Conjuction (and), Disjunction (or), Implication (if), biconditional (iff) 13.3. atomic formulas / atomic sentences / simple sentences Sentences contain no logical connectives...