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Foreword by Professor H J Paton
Notes to Second and Third Editions
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ancestor argument argument-place asserted atomic fact Chapter clear common complex connection contradiction correlated corresponds definite descriptions elementary propositions empty place example exist explained expression falsehood formal concept formal series Frege function give given Gottlob Frege hence hold idea introduced language logical constants logical form logical sum logical truth logically asserted loves Socrates Mathematics means modus ponens negation negative notation notion objects observation statements occurs operation ordinary ostensive definition p v q Philosophical Investigations picture theory picture-proposition Plato possible predicate proper name propo propositional sign question Ramsey reference relation remarks Russell Russell's sense sense and reference sentence set of propositions shew shewn significant proposition simple signs sition solipsism someone speak stand such-and-such suppose symbol tautology term Theory of Descriptions things thought tion Tractatus true or false truth-conditions truth-functions truth-table truth-value variable wise Wittgen Wittgenstein says word writing