PDE HW1¶
Chpater I PDEIntro
Chapter II Laplace
\(n\ge 3\) , \(f\in C_c^2(R^n)\)，则 \(f*\Phi\) 有界 LaplaceQuestion Question
Chapter V 5.10 problems
1 Holder
6 POU
11 Approx Corollary
12 \(\|D^hu\|_{L^1(V)}\le C \nRightarrow Du\)
13 反例
14 p=n
15 Poincare
17 Chain Rule
\(\int u\phi = 0\ \Rightarrow\ u=0\text{ a.e. }\) RealAnalysisApprox