RT Conference Proceedings T1 Frege’s Begriffsschrift and logicism A1 Bertran-San-Millán, Joan A2 Arazim, Pavel A2 Lávička, Tomas AB I put forward a new interpretation of Frege’s use of the formal system developed in Begriffsschrift, the concept-script. In contrast with the commonly-held view, I argue that this use suggests that he did not articulate a logicist programme in 1879. Two lines of argument support this claim. First, I show that between 1879 and 1882 Frege presented the concept-script of Begriffsschrift as a tool for arithmetic, and not as a logical theory from which to deduce arithmetical theorems. Second, I consider Frege’s results in Begriffsschrift and conclude that they do not imply an endorsement of his later logicist programme. SN 978-1-84890-281-7 YR 2018 FD 2018 LK https://hdl.handle.net/20.500.14352/132639 UL https://hdl.handle.net/20.500.14352/132639 LA eng NO 31th in the series of annual international symposia devoted to logic.The work on this paper was supported by the Formal Epistemology – the Future Synthesis grant, in the framework of the Praemium Academicum programme of the Czech Academy of Sciences. NO Czech Academy of Sciences DS Docta Complutense RD 21 feb 2026