Exact-dimensional property of density of states measure of Sturm   Hamiltonian
  For frequency $\alpha$ of bounded type and coupling $\lambda>20$, we show that the density of states measure $\NN_{\alpha,\lambda}$ of the related Sturm Hamiltonian is exact upper and lower dimensional, however, in general it is not exact-dimensional. 
Yanhui Qu
math.DS math-ph math.MP