arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1204.5983math.AP
收藏

齐次heat equation边值问题的很弱解

Very weak solutions to the boundary-value problem of the homogenous heat equation

B. Nowakowski, W. Zajączkowski

摘要:

考虑了具有零初值和Dirichlet边界条件的区域$Ω$在$\mathbb{R}^n$中的齐次热方程.我们正在寻找解决方案在$W^{r,s}_{p,q}(Ω\times(0,T))$,其中$r < 2$,$s < 1$,$1 \leq p < \infty$,$1 \leq q \leq \infty$ .由于我们在$L_{p,q}$框架中工作,因此不可能对边界数据进行任何扩展并按部分进行集成。因此,该解以积分形式表示,并被称为\emph{very weak}解。在半空间中进行关键估计,并限于$L_q(0,T;W^α_p(Ω))$、$0 \leq α< \frac{1}{p}$和$L_q(0,T;W^α_p(Ω))$、$α\leq 1$。有界域$Ω$的存在性和估计遵循扰动和不动点参数。

英文摘要:

We consider the homogeneous heat equation in a domain $Ω$ in $\mathbb{R}^n$ with vanishing initial data and the Dirichlet boundary condition. We are looking for solutions in $W^{r,s}_{p,q}(Ω\times(0,T))$, where $r < 2$, $s < 1$, $1 \leq p < \infty$, $1 \leq q \leq \infty$. Since we work in the $L_{p,q}$ framework any extension of the boundary data and integration by parts are not possible. Therefore, the solution is represented in integral form and is referred as \emph{very weak} solution. The key estimates are performed in the half-space and are restricted to $L_q(0,T;W^α_p(Ω))$, $0 \leq α< \frac{1}{p}$ and $L_q(0,T;W^α_p(Ω))$, $α\leq 1$. Existence and estimates in the bounded domain $Ω$ follow from a perturbation and a fixed point arguments.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑