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Wolphram jonny

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9 What set theoretical questions could never be answered by Turing machines of arbitrary cardinality? Mar 10 '14
8 Can a Hamkins infinite time Turing Machine with infinite Super Turing jumps (from higher type oracles) get the power to decide $\Sigma_1^2$ sets? Feb 8 '13
2 Would a non-constructible set become constructible if we had oracles of arbitrarily high cardinality for the halting problems of ordinal computers? Mar 17 '14

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