4 ms·

I feel like having a 1 on the first line is cheating given the constraint "using no other digits".

• tessierashpool9 2y ago
  log is also using another digit.
• tantalor 2y ago
  By that argment you shouldn't be able to use factorial function either, because that has a "hidden 1" too: fac(n) = n * fac(n-1) n>0 = 1 n=0
  • Hamuko 2y ago
    The one here isn't hidden in any way – it's on the very first line. You might as well just define X = 7 and do 2-2+2-2+X.
    • tantalor 2y ago
      I'm not "defining" anything; I'm just using fairly bog standard math that has been around for hundreds of years.
      • empath75 2y ago
        S(N) is just S(N), it's not N+1 unless you define it that way. S(0) is not 1, it's S(0). The successor function doesn't really get mapped to numbers without an explicit additional mapping.
        • account42 2y ago
          Unless you are talking about an alternative number system where 1+1 is not 2 then yes, S(0) is 1.
          • empath75 2y ago
            No, it's not. That's just the standard model of peano arithmetic. You can map the successor function to many different operations and objects that aren't even numbers.
            • account42 2y ago
              Yes it is. "1" is just a label for what is also known as S(0) no mater what other ways you invent to refer to that element. Just like 一 is another label for the same concept.