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![[parent]](http://images.planetmath.org:8080/images/uparrow.png) Viewing Message
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| ``Re: Pi^0_n definition correct?''
by iddo on 2003-09-07 05:40:53 |
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| Yes, you are right.
But, if the definitions are equivalent, how come $Delta_0$ not equal to $Delta_1$?
(the definitions are in "Arithmetical Hierarchy"). |
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