## Mathematical Formulation of the Quantum Theory of Electromagnetic Interaction in Physical Review, November 1, 1950, pp. 440-457 [1st Edition in Original Wraps]

Lancaster: American Physical Society, 1950. 1st Edition. FIRST EDITION of Feynman's proof of the validity of his 1949 "reformation of quantum mechanics itself," work that would "elegantly rewrite quantum theory" (American National Biography; Peacock, The Quantum Revolution, 102). In this, the third paper in his pivotal reformulation of quantum mechanics, Feynman provides the mathematical "proof of the validity of the [his] rules for calculations of amplitudes in quantum electrodynamics. Feynman's paper rigorously proved that his treatment of "the problem of molecular forces from a thoroughly quantum-mechanical point of view" was accurate (DSB). Feynman had arrived "at a simple means of calculating the energy of a molecular system that continues to guide quantum chemists" (ibid).

In 1965 Feynman was awarded the Nobel Prize along with Schwinger and Tomonaga "for their fundamental work in quantum electrodynamics, with deep-ploughing consequences for the physics of elementary particles" (Particle Physics, One Hundred Years of Discoveries, 113).

We also offer this separately in original wraps. Item #1620

CONDITION & DETAILS: Lancaster: American Physical Society. Complete first in original wraps. Small repaired tear in upper right corner of front wrap; light old flattened crease. Bright and clean throughout. Very good condition.

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