عدم امکان سلسله مراتب نامتناهی sinnها در جملات گرایشی در تئوری معنای فرگه

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[2] ---------- (1997). "Introduction", in The Frege Reader, Basil Blackwell , pp.1-47.

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[5] Dummett, Michael, (1973). Frege. Philosophy of Language, Duckworth.

[6] ---------- (1991). Frege. Philosophy of Mathematics, Duckworth.

[7] ---------- (1991). Frege and Other Philosophers, OUP .

[8] Frege, Gottlob, (1879). "Beggriffsschrift". in The Frege Reader, Edited. by Michael Beaney (1997), Basil Blackwell, pp.47-78.

[9] ---------- (1884). The Foundations of Arithmetic, translated by  J.L.Austin (1950), Basil Blackwell.

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[11] ---------- (1892). "Comments on Sinn & Bedeutung", in The Frege Reader, Edited. by Michael Beaney (1997), Basil Blackwell, pp.172-180

[12] ---------- (1893). The Basic Laws of Arithmetic V.1,  translated by Montgomery Furth (1964), University of California Press.

[13] ---------- (1897). "Logic’, in The Frege Reader, Edited. by Michael Beaney (1997), Basil Blackwell, pp.227-250.

[14] ---------- (1902-3). "Letter : Frege to Russell", in Philosophical & Mathematical Correspondence, Edited  by Gottfried Gabriel, Hans Hermes, Friedrich Kambartel, Christian Thiel & Albert Veraart (1980), Basil Blackwell, pp.149-158.

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[16] ---------- (1919). "Notes for Ludwig Darmstaedter", in Posthumous Writings, Edited by Hermes, Friedrich Kambertel & Friedrich Kaulbach (1979), Basil Blackwell, pp.253-257.

[17] Gabriel, Gottfried, (2004). "Introduction" in Frege's Lectures on Logic. Carnap's Student Notes, University of Pittsburg, pp. 1-17.

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[19] Mendelsohn, Richard L. (2005). The Philosophy of Gottlob Frege, CUP.

[20] Pelletier, F.G. (1999). Did Frege Believe Frege's Principle?, University of Alberta.

[21] Salmon, Nathan, (1986). Freges Puzzle, MIT Press.

[22] Sluga, Hans, (1980). Gottlob Frege, Routledge.

[23] Textor, Mark, (2011). Frege on Sense and Reference, Routledge.