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Hypothetical Judgment/Law/Frege: compound sentences, brings together two thoughts, not two judgments. - E.g. - "If a number is less than 1, then ..." - context: is produced by an indeterminate part: E.g. a number. - The subsentences have no sense in themselves (no complete thought). - On the other hand: if the common thing is a name: E.g. "Napoleon, who recognized the danger, led ..." - here there are two complete thoughts. - Hence the meaning, also of the subordinate clauses, is a truth value (true or false). - ( (s) "Napoleon..." is not a hypothetical judgment.) - ((s)> relative clause).
Die Grundlagen der Arithmetik Stuttgart 1987
Funktion, Begriff, Bedeutung Göttingen 1994
Logische Untersuchungen Göttingen 1993