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Old June 5th, 2009, 11:41 AM
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Quote:
but showing the Hausdorff Measure is infinity for dimension less than 1...


Consider just the half interval I=(0,1).
Let's suppose that \mathcal{H}^{1-\lambda}(I) is finite for some 0<\lambda<1. Choose a covering (S) of I costisting of intervals of individual length \delta>0. Their number must be no less than \left[1/\delta\right] (as (S) is also a covering for the Lebesgue measure of I in \mathbb{R}). This means that the related Hausdorff sum will be equal to C\delta^{1-\lambda}\left[1/\delta\right], where C is a constant not depending on \delta or (S). So, the infimum m(\delta) of all such partitions (which we assumed exists) satisfies m(\delta)\geq C\delta^{1-\lambda}\left[1/\delta\right]. Now in the last relation, the limit of the right hand side as \delta\rightarrow0 behaves like the limit of \delta^{-\lambda} as \delta\rightarrow0, which is infinite. A contradiction.
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