EINSTEIN, Albert, & Valentine Bargmann.

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Bivector Fields. First edition, offprint issue, of the first of two papers on Einstein's penultimate approach by which he hoped to arrive at a unified field theory. "What Einstein and Bargmann proposed was an attempt at a nonlocal relativistic theory of gravitation. They investigated the properties of a new kind of mathematical object that they called 'bivectors'" (Sauer, p. 300).

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