论文部分内容阅读
Let G？R2 be a regular anisotropic fractal. We discuss the problem of the negative spectrumfor the Schr ¨odinger operators associatedwith the formal expression Hb=id？D＋btrG b , b∈R, acting in the anisotropic Sobolev space W1,a 2 （R2）, where D is the D