Lowness and $\Pi _{2}^{0}$ Nullsets

Journal of Symbolic Logic 71 (3):1044 - 1052 (2006)
Abstract
We prove that there exists a noncomputable c.e. real which is low for weak 2-randomness, a definition of randomness due to Kurtz, and that all reals which are low for weak 2-randomness are low for Martin-Löf randomness.
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