I think you made a typo but get the gist, but the rounding functions are the square brackets with the top or bottom horizontal parts missing: http://en.wikipedi

I think you made a typo but get the gist, but the rounding functions are the square brackets with the top or bottom horizontal parts missing: http://en.wikipedia.org/wiki/Floor_and_ceiling_functions http://en.wikipedia.org/wiki/Floor_and_ceiling_functions [] would be array indexing (or ranges, for instance delta_{theta} e (math symbol, element of, but can't type that here) [0,pi] ) and {} are sets/tuples