User blog comment:Wythagoras/Dollar function part 2/@comment-7484840-20130615075613

I'm not sure about the commas in rules 8. I think I know what you mean, but does the triangle stay the same length throughout the definition, as in will the number of zeros it represents remain constant? If they do, then should there be a comma between the triangle and the 0 in the a$[Δ0,b]? If there isn't then it looks like the thing it evaluates to is bigger than it was to start with.