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EINSTEIN, Albert (1879-1955). 'Geometrie und Erfahrung'. Berlin: Ernst Siegfried Mittler und Sohn for Julius Springer, 1921, offprint from: Sitzungsberichte der Königlich preussischen Akademie der Wissenschaften, volume V, part 1, pp. 123-130.
8° (218 x 143mm). Illustrations. (Title lightly spotted.) Original printed wrappers, lower wrapper with advertisements for works published between 1931 and 1921 (lightly spotted and marked, edges a little rubbed and creased).
FIRST SEPARATE EDITION. PRESENTATION COPY INSCRIBED BY EINSTEIN 'Für ein Stündlein Nachdenkens , A. Einstein' on the inside of the upper wrapper. Einstein's 'particularly beautiful lecture' (DSB IV, p.330) on geometry and experience delivered at the Prussian Academy of Science's commemorative session to honour Frederick the Great, 'in which he summed up his views on the geometrization of physics and relativity and the relation of mathematics to the external world. Here he gave his famous answer to the puzzling question of why mathematics should be so well adapted to describing the external world: "Insofar as the Laws of Mathematics refer to the external world, they are not certain; and insofar as they are certain, they do not refer to reality"' (loc. cit.). Waller 12,129; cf. Boni, Russ and Laurence 122 (journal issue).
8° (218 x 143mm). Illustrations. (Title lightly spotted.) Original printed wrappers, lower wrapper with advertisements for works published between 1931 and 1921 (lightly spotted and marked, edges a little rubbed and creased).
FIRST SEPARATE EDITION. PRESENTATION COPY INSCRIBED BY EINSTEIN 'Für ein Stündlein Nachdenkens , A. Einstein' on the inside of the upper wrapper. Einstein's 'particularly beautiful lecture' (DSB IV, p.330) on geometry and experience delivered at the Prussian Academy of Science's commemorative session to honour Frederick the Great, 'in which he summed up his views on the geometrization of physics and relativity and the relation of mathematics to the external world. Here he gave his famous answer to the puzzling question of why mathematics should be so well adapted to describing the external world: "Insofar as the Laws of Mathematics refer to the external world, they are not certain; and insofar as they are certain, they do not refer to reality"' (loc. cit.). Waller 12,129; cf. Boni, Russ and Laurence 122 (journal issue).
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