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arXiv 1611.01422math.AP
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具有非标准$p(x,t)$ -增长的次二次抛物方程组的很弱解

Very weak solutions of subquadratic parabolic systems with non-standard $p(x,t)$-growth

Qifan Li

摘要:

本文的目的是建立一类以抛物型$p(x,t)$ -Laplacian方程组为模型的抛物型方程组的很弱解的更高可积性结果。在指数函数$p:Ω_T=Ω\times (0,T)\to\left(\frac{2n}{n+2},2\right]$的假设下,证明了当$ε>0$足够小时,任何具有$|Du|^{p(\cdot)(1-\varepsilon)}\in L^1(Ω_T)$的$u:Ω_T\rightarrow\mathbb{R}^N$的很弱解都属于自然能量空间,即$|Du|^{p(\cdot)}\in L^1_{\operatorname{loc}}(Ω_T)$.这推广了[V. Bögelein and Q. Li,非线性分析,98(2014),pp. 190-225]的次二次的情况下。

英文摘要:

The aim of this paper is to establish a higher integrability result for very weak solutions of certain parabolic systems whose model is the parabolic $p(x,t)$-Laplacian system. Under assumptions on the exponent function $p:Ω_T=Ω\times (0,T)\to\left(\frac{2n}{n+2},2\right]$, it is shown that any very weak solution $u:Ω_T\rightarrow\mathbb{R}^N$ with $|Du|^{p(\cdot)(1-\varepsilon)}\in L^1(Ω_T)$ belongs to the natural energy spaces, i.e. $|Du|^{p(\cdot)}\in L^1_{\operatorname{loc}}(Ω_T)$, provided $ε>0$ is small enough. This extends the main result of [V. Bögelein and Q. Li, Nonlinear Anal., 98 (2014), pp. 190-225] to the subquadratic case.

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。

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