中文

退化抛物方程黏性近似解的误差估计

偏微分方程分析 2007-05-23 v1

摘要

基于非线性(强)退化抛物方程熵解理论的最新进展,我们给出初值问题 tw+div(V(x)f(w))=ΔA(w)\partial_t w+\mathrm{div} \bigl(V(x)f(w)\bigr)= \Delta A(w)(其中 V=V(x)V=V(x) 为向量场,f=f(u)f=f(u) 为标量函数,且 A(.)0A'(.) \geq 0)的黏性近似解的 L1L^1 误差估计的直接证明。该黏性近似方程是均匀抛物方程 twϵ+div(V(x)f(wϵ))Δ(A(wϵ)+ϵwϵ)\partial_t w^{\epsilon}+\mathrm{div} \bigl(V(x) f(w^{\epsilon})\bigr) \Delta \bigl(A(w^{\epsilon})+\epsilon w^{\epsilon}\bigr)ϵ>0\epsilon>0)的弱解。该误差估计的阶为 ϵ\sqrt{\epsilon}

关键词

引用

@article{arxiv.math/0302038,
  title  = {An error estimate for viscous approximate solutions of degenerate parabolic equations},
  author = {Steinar Evje and Kenneth H. Karlsen},
  journal= {arXiv preprint arXiv:math/0302038},
  year   = {2007}
}

备注

arxiv version is already official