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arXiv 2209.04781math.AP
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具退化系数和时间加权源的耦合抛物型方程组的整体解

Global solution for a coupled parabolic system with degenerate coefficients and time-weighted sources

Ricardo Castillo, Omar Guzmán-Rea, Miguel Loayza, María Zegarra

摘要:

本文得到了具有时间加权源和退化系数$ u_{t}- \mbox{div} ( ω(x)\nabla { u} )= t^{r} v^{p} $和$\mathbb{R}^{N} \times (0,T)$的抛物方程组的Fujita指数,其中$p,q > 0$和$ pq > 1$ ; $r,s>-1 $ ;以及$ω(x) = | x_1|^{a},$或$ω(x) = | x |^{b}$和$a,b > 0$ .

英文摘要:

In this paper, we obtain the so-called Fujita exponent to the following parabolic system with time-weighted sources and degenerate coefficients $ u_{t}- \mbox{div} ( ω(x)\nabla { u} )= t^{r} v^{p} $ and $ v_{t}- \mbox{div} ( ω(x)\nabla {v} )= t^{s} u^{p}$ in $\mathbb{R}^{N} \times (0,T)$ with initial data belonging to $ \left[L^\infty(\mathbb{R}^N)\right]^2.$ Where $p,q > 0$ with $ pq > 1$; $r,s>-1 $; and either $ω(x) = | x_1|^{a},$ or $ω(x) = | x |^{b}$ with $a,b > 0$.

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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