Vitali set
subset of [0,1] whose intersection with any translation of the set of rationals is a singleton; elementary example of a non-Lebesgue-measurable set of reals
en-US/viˈtɑli ˈsɛt/
subset of [0,1] whose intersection with any translation of the set of rationals is a singleton; elementary example of a non-Lebesgue-measurable set of reals