Re: _ + _ = __

>>>> about purity in basics, could you imagine how to demonstate that 1
>>>> more 1 is 2 ?
>
>
> here is another possibility:
>
> 1 = _ (length)
>
> __ = 2 (2 lengths of 1)
>
>
will have to look for, and eventually translate an old pure arithmetics
book...

a lenghty affair !
keep on the theme

:-)

Pat

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