2007-03-22 02:36:32 · 6 answers · asked by Christina Nguyen 2 in Science & Mathematics ➔ Mathematics
Yeah i can prove it too. But first show me, how you can prove it..?
2007-03-22 03:00:18 · answer #1 · answered by MDA 4 · 0⤊ 0⤋
It is surprisingly difficult to prove that 1 + 1 = 2. Russell and Whitehead did it in the Principia but it took them 120 pages. It really depends on what basic assumption s you make. The more basic your assumptions, the more work it will take you to prove it.
2007-03-22 09:49:03 · answer #2 · answered by Gnomon 6 · 0⤊ 0⤋
1+1 = Succ(0)+Succ(0)Â Â Â Â Â Â Â Â Â (defn. of 1)
        = Succ(Succ(0)) + 0    (defn of +)
        = Succ(Succ(0)       (defn of +)
        = Succ(1)                 (defn of 1)
        = 2                         (defn of 2)
QED
2007-03-22 09:59:06 · answer #3 · answered by kanenas 1 · 0⤊ 0⤋
1+1=2
N^0 + N^0 = 2N^0
where N is a natural number = 1,2,3,4,5,6,7,8,9,...
You can give any number from 1 to infinity.
2007-03-22 09:46:51 · answer #4 · answered by Anonymous · 0⤊ 0⤋
You should investigate Principia Mathematica by Russell and Whitehead.
Wiki it.
2007-03-22 09:41:39 · answer #5 · answered by Jerry P 6 · 3⤊ 0⤋
If you loaned me one dollar yesterday and one dollar today you would expect to get back two dollars tomorrow.
2007-03-22 10:16:35 · answer #6 · answered by Kes 7 · 0⤊ 0⤋