EDWARD WITTEN AUTOGRAPHED SIGNED EQUATION PSA/DNA Edward Witten Autographed Signed Equation. 5? 3? Index Card. PSA/DNA Certified. Graded NM-MT 8. Edward Witten signature with a handwritten equation. This autographed equation by Edward Witten is a must-have for any collector of historical memorabilia. Witten, known for his contributions to the field of theoretical physics, has signed this equation, making it a unique and valuable item for fans of inventors and geniuses. Buyers can be certain of this item's authenticity thanks to PSA or DNA authentication. The equation was manufactured in the United States, adding to its value and rarity. Don't miss the chance to add this incredible piece to your collection. Edward Witten (born August 26, 1951) is a mathematical and theoretical physicist from the United States. He is Professor Emeritus of Natural Sciences at Princeton's Institute for Advanced Study. Witten studies string theory, quantum gravity, supersymmetric quantum field theories, and other branches of mathematics. Witten's work has also had an impact on pure mathematics. He was the first physicist to receive the International Mathematical Union's Fields Medal in 1990 for his mathematical contributions to physics, such as his 1981 proof of the positive energy theorem in general relativity and his interpretation of the Jones invariants of knots as Feynman integrals. He is widely regarded as the practical founder of M-theory.