if x > 0 , {x} ∩ ƒ(x-1)
ƒ(x) → <
if x <= 0, ø
Or
ƒ(x) → (0, x] ∩ N
Are these correct?
Name:
Anonymous2008-02-28 10:16
>>3 here >>1
Correct is vague.
They are, however not identical.
The first allows negative numbers, while the second does not.
So, if we name them f and g,
f(3) = g(3), but f(-1) = ø while g(-1) is incorrect.