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ALBERT EINSTEIN (1879-1955)
Zur affinen Feldtheorie, offprint from: Sitzungsberichte der Preussischen Akademie der Wissenschaften, physikalisch-mathematischen Klasse XVII, pp. 137-140. Berlin: Reichsdruckerei for Verlag der Akademie der Wissenschaften in Kommission bei Walter de Gruyter u. Co., 1923. 4° (255 x 184mm). Original printed orange wrappers. FIRST SEPARATE EDITION. SIGNED AND DATED 'ALBERT EINSTEIN (23.)'. Norman 698; Weil 132.
Zur einheitlichen Feldtheorie, offprint from: Sitzungsberichte der Preussischen Akademie der Wissenschaften. Phys.-math. Klasse I. Berlin: Reichsdruckerei for Verlag der Akademie der Wissenschaften in Kommission bei Walter de Gruyter u. Co., 1929. 4° (265 x 186mm). FIRST SEPARATE EDITION. Norman 700; Weil 165;.
Einheitliche Feldtheorie und hamiltonsches Prinzip, offprint from: Sitzungsberichte der Preussischen Akademie der Wissenschaften, Phys.-math. Klasse X. Berlin: Reichsdruckerei for Verlag der Akademie der Wissenschaften in Kommission bei Walter de Gruyter u. Co., 1929. 4° (256 x 183mm). FIRST SEPARATE EDITION. Weil 166.
THREE FINE COPIES OF OFFPRINTS ON THE UNIFIED FIELD THEORY, THE FIRST SIGNED BY EINSTEIN IN THE YEAR OF PUBLICATION. Einstein's pursuit of the Unified Field Theory was prompted by his dissatisfaction at the General Theory of Relativity's inability to completely incorporate the electromagnetic field into the geometry of space-time. 'In 1918 Hermann Weyl had begun investigating the possibility of constructing a unified field theory preserving the dimensionality of space-time while formally altering its geometry, making a special case of the class known as affine geometries. Einstein's first investigation of Weyl's ideas, published in [Zur affinen Feldtheorie] introduced the notion of distant parallelism' (Norman). By early 1929 Einstein had solved the principal obstacles to writing field equations for the Unified Field Theory, and in Zur einheitlichen Feldtheorie he employed distant parallelism to further the theory, which was popularly announced as a great scientific breakthrough, despite the author's qualification of the article as tentative; in turn, he would encounter intractable problems with this approach, and it too was abandoned. The third paper is a consideration of the Unified Field Theory in the light of the Hamiltonian Principle (this and the preceding paper are both included in PMM 416). Despite his repeated endeavours over a period of years, the Unified Field Theory eluded Einstein, who stated towards the end of his life that 'although it is doubtful that a unified field theory of the type he was seeking could exist, even its non-existence would be of sufficient interest to be worth establishing it. If he did not do it ... perhaps nobody ever would' (DSB IV, p. 330). (3)
Zur affinen Feldtheorie, offprint from: Sitzungsberichte der Preussischen Akademie der Wissenschaften, physikalisch-mathematischen Klasse XVII, pp. 137-140. Berlin: Reichsdruckerei for Verlag der Akademie der Wissenschaften in Kommission bei Walter de Gruyter u. Co., 1923. 4° (255 x 184mm). Original printed orange wrappers. FIRST SEPARATE EDITION. SIGNED AND DATED 'ALBERT EINSTEIN (23.)'. Norman 698; Weil 132.
Zur einheitlichen Feldtheorie, offprint from: Sitzungsberichte der Preussischen Akademie der Wissenschaften. Phys.-math. Klasse I. Berlin: Reichsdruckerei for Verlag der Akademie der Wissenschaften in Kommission bei Walter de Gruyter u. Co., 1929. 4° (265 x 186mm). FIRST SEPARATE EDITION. Norman 700; Weil 165;.
Einheitliche Feldtheorie und hamiltonsches Prinzip, offprint from: Sitzungsberichte der Preussischen Akademie der Wissenschaften, Phys.-math. Klasse X. Berlin: Reichsdruckerei for Verlag der Akademie der Wissenschaften in Kommission bei Walter de Gruyter u. Co., 1929. 4° (256 x 183mm). FIRST SEPARATE EDITION. Weil 166.
THREE FINE COPIES OF OFFPRINTS ON THE UNIFIED FIELD THEORY, THE FIRST SIGNED BY EINSTEIN IN THE YEAR OF PUBLICATION. Einstein's pursuit of the Unified Field Theory was prompted by his dissatisfaction at the General Theory of Relativity's inability to completely incorporate the electromagnetic field into the geometry of space-time. 'In 1918 Hermann Weyl had begun investigating the possibility of constructing a unified field theory preserving the dimensionality of space-time while formally altering its geometry, making a special case of the class known as affine geometries. Einstein's first investigation of Weyl's ideas, published in [Zur affinen Feldtheorie] introduced the notion of distant parallelism' (Norman). By early 1929 Einstein had solved the principal obstacles to writing field equations for the Unified Field Theory, and in Zur einheitlichen Feldtheorie he employed distant parallelism to further the theory, which was popularly announced as a great scientific breakthrough, despite the author's qualification of the article as tentative; in turn, he would encounter intractable problems with this approach, and it too was abandoned. The third paper is a consideration of the Unified Field Theory in the light of the Hamiltonian Principle (this and the preceding paper are both included in PMM 416). Despite his repeated endeavours over a period of years, the Unified Field Theory eluded Einstein, who stated towards the end of his life that 'although it is doubtful that a unified field theory of the type he was seeking could exist, even its non-existence would be of sufficient interest to be worth establishing it. If he did not do it ... perhaps nobody ever would' (DSB IV, p. 330). (3)
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