Covering of the null ideal may have countable cofinality

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Authors ^1,²

Institute of Mathematics, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel
Department of Mathematics, Rutgers University, New Brunswick, NJ 08854, U.S.A.

We prove that it is consistent that the covering number of the ideal of measure zero sets has countable cofinality.

null sets, cardinal invariants of the continuum, iterated forcing, ccc forcing

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