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Corrections for arithmetical hierarchy
1.
priority
by
polarbear
on 2008-06-19 03:09:46 (accepted)
2.
Sigma^0_n and Pi^0_n definitions
by
iddo
on 2003-09-04 04:34:27 (retracted)
3.
Incorrect definition of recursivity
by
dzsekijo
on 2003-07-21 11:57:54 (accepted)
4.
font
by
xiaoyanggu
on 2003-07-16 11:58:10 (retracted)
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