Warp wrote:
> That sounds a bit like a circular definition. "A turing machine is> something which can perform any algorithm." "An algorithm is something> which a turing machine can perform."
Many things can be defined in more than one way.
You could say that "asin(x) is the inverse of sin(x)", and you can also
say that "sin(x) is the inverse of asin(x)". Circular? Possibly.
Well-defined? Definitely. ;-)
