conull

Moreover, if the combinatorial structure on X is "induced" by the #91;0#59;1#93;-shift action of a countable group #92;Gamma, then, even without any local finiteness assumptions, there is a Borel choice for f which satisfies the constraints on an invariant conull set (i.e., with #92;epsilon#61;0).

2016, Anton Bernshteyn, “Measurable versions of the Lovász Local Lemma and measurable graph colorings”, in arXiv