... µ gives zero mass to sets with σ-finite (n−1)-dimensional Haus- dorff measure, 2.1. The main theorem ... )-dimensional Haus- dorff measure. Observe that, by hypothesis (iii), the subset C is of full µ-measure. It ... µ gives zero mass to sets with σ-finite (n−1)-dimensional Haus- dorff measure, 2.1. The main theorem ... )-dimensional Haus- dorff measure. Observe that, by hypothesis (iii), the subset C is of full µ-measure. It ...