In the following paper, there is some notation which I don't understand:
Equations 17, 19 and 20 have expressions in brackets followed by a superscript plus sign.
I can interpret this one of two ways (at least):
- "The positive part of", i.e. max(x, 0), or
- Ignore (set to zero) the entire integrand where the expression is less than zero.
Given the context of the rest of the paper, I am inclined to the second interpretation, but would appreciate further input, particularly if you have an alternative interpretation.