ABSTRACT
Suppose a given state is described by the wave function χ(q, t). What, then, should be the probability that in the process of evolution from the state ψ(q a , t a ) at a point q a to a state ψ(q b , t b ) at a point q b that given state appears? This should be Κ q b t b q a t a = ∫ Κ q b t b q c t c Κ q c t c q a t a d q c https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781003145554/e05d5bc2-9f6b-44fc-95c4-8a9db92e5483/content/eqn12_1.jpg"/>
