1 Table of Contents: “..., Positrons, and Photons -- The Interacting Quantum Field, and the Magic Dyson Series for the S-Matrix...”

2 Table of Contents: “... associated with prediction errors for a stationary Gaussian process -- A stochastic Dyson series expansion...”

3 “... is generalized for higher orders. An alternative form of the Dyson series, in matrix form instead of integral...”