The language extends simple arithmetic (with addition, subtraction, multiplication and division) by adding user-definable constants (abbreviations) and user-definable unary functions.
In the original spirit of pattern matching, a testing operation, comparison, has been safely and clearly combined with a selection operation, subtraction.
I have argued that addition from a minimalist model is easier than subtraction from a maximalist model.
The averaged residue form factor is computed from the spherically averaged scattering amplitudes of the amino-acid residues after solvent subtraction weighted according to their abundance.
The first order model (18) includes two multiplications or divisions and two subtractions.
Thus, it is the digital handling of the image rather than the subtraction that is its main advantage.
Now, if we really want to have a subtraction, we can remove the 1 2 2 offset.
The final subtraction resulted in activity in the anterior cingulate cortex, several portions of left anterior prefrontal cortex, and right inferior lateral cerebellum.
