Hi!
I just stumbled on page 55 over the explanation for truncation:
“The truncation at zero need not be specified as Stan only requires the density
up to a proportion”
To my understanding this statement is only correct for densities which are symmetric around zero (or whatever the truncation point is). The quote from above is right next to a truncated half-normal, so it is ok in the context, but if my understanding is correct we should maybe rephrase this, right?
Sebastian