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Truth value potential/Tugendhat: two names that denote the same object, have the same truth value potential - solution for the conflict: Frege: subsets, quotes: names of sentences - Searle: sentences never names - Tugendhat then truth value potential quasi transmission of the characteristics of sentences to names.
Truth Value/sentence/object/Frege: by substitutability it is proved that the truth values of sentences correspond to the object of the names - TugendhatVsFrege: only in reverse it can be proved that the objects of the names correspond to the truth values.
Odd Meaning/Frege: name of a sentence.
Vorlesungen zur Einführung in die Sprachanalytische Philosophie Frankfurt 1976
Philosophische Aufsätze Frankfurt 1992