摘要
An intrinsic Harnack estimate and some sup-estimates are established for nonnegative weak solutions of equations of non-Newtonian polytropic filtration ut -div(|Dum |p-2Dum) =0, m(p- 1) < 1, m>0, p> 1.
基金
Project supported by the National Natural Science Foundation of China (No.19771069).