Feynman's Operational Calculus and Beyond: Noncommutativi...
Johnson, Gerald W. / Lapidus, Michel L. / Nielsen, Lance![Feynman's Operational Calculus and Beyond: Noncommutativity and Time-Ordering](https://support.digitalhusky.com/media/annotations/sorted/226/22667167/CHSBZCOP0322667167.jpg)
This book lies at the interface between mathematics and quantum theory. It provides a mathematically precise development of certain heuristic ideas originated by Richard Feynman in a profoundly influential 1951 paper.