Changes

Because the propogator is actually in terms of the differences between the x and t values, we will write the difference between the x-vectors as <math>\Delta x</math> and the difference between the times as <math>\Delta t</math>.

Because the propogator is actually in terms of the differences between the x and t values, we will write the difference between the x-vectors as <math>\Delta x</math> and the difference between the times as <math>\Delta t</math>.

[integral]dti [integral]g(stuff)f(stuffi)dxi dyi =

The integral is therefore

 

<math>\int{dti} \int{f(x_i,t_i)g(\Delta x, \Delta t) dx_i dy_i}</math>

f(xf, tf)

f(xf, tf)