ABSTRACT
Multiply expression (15.2) on the right and left by a factor λN/(N-s)! and integrate over the coordinates rs+1,...,rN. Taking into account the equality for the interparticle interactions (13.1), so that
E N E sE r r E r r r r r r≤ < ≤ + ≤ ≤
∂ ∂ ∂ ∂ = = +
∂ ∂ ∂ ∂∑ ∑ we write
({ }) ({ }) ({ })
... ( , ) ({ }) ... 0 ( )!
