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Sense / meaning / Frege / Mates: both should not be confused because the compositionality applies to both ((s) seperately) : - e.g. (1) morning star / Aevening star are the same (2) m.s. / m.s. are the same - (1) and (2) do not have the same meaning - E.g. a = a is not the same sense as a = b - n.B.: nevertheless m.s. and e.s. have the same meaning (reference) - meaning / Frege: m. of a statement: the truth value (object) - sense of a statement: thought, content, proposition -
((s) decisive place in the literature).
truth value / MatesVsFrege: do not exist - yet per Frege, without whose metaphysics - sense (manner of presentation) uniquely determines the meaning (reference).
Elementare Logik Göttingen 1969