Abstract
The argument of [2] is not correct. Specifically, Lemma 7 does not appear to be true in general. It does not seem worthwhile to publish a corrected version of the proof, since Friedman and Scedrov [1], using a somewhat related argument, have now succeeded in proving the full theorem which eluded me. In the notation of [2], they show that ZFdoes not have the set existence property and therefore that ZFI does not imply the collection axiom.
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