Re: A help with a formal proof for an "obvious" fact, please




nicegirl_130@xxxxxxxxx wrote:
I've learned that giving formal proofs to "obvious" facts are usually
kinda difficult.

Believe it or not, it isn't trivial to prove 1+1 = 2 starting from a
minimal set
of axioms.

See here for instance:
http://www.idt.mdh.se/~icc/1+1=2.htm

- Randy

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