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Does every measurable set in the plane with positive Lebesgue measure contain a cartesian product of two measurable sets of the real line with positive Lebesgue measures?
Does every measurable set in the plane with positive measure contain a cartesian product of two measurable sets of the real line with positive measures?
Does every measurable set in the plane with positive Lebesgue measure contain a cartesian product of two measurable sets of the real line with positive Lebesgue measures?
Does every measurable set in the plane with positive measure contain a cartesian product of two measurable sets of the real line with positive measures?
