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arxiv: 1312.2509 · v1 · pith:F7MC4CLFnew · submitted 2013-12-09 · 🧮 math.AP

Parabolic equations with exponential nonlinearity and measure data

classification 🧮 math.AP
keywords omegatextarraybeginboundedequationphantomtimes
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Let $\Omega$ be a bounded domain in ${\mathbb R}^N$ and $T>0$. We study the problem \begin{equation} (P)\left\{ \begin{array}{lll} u_t - \Delta u \pm g(u) &= \mu \quad &\text{in } Q_T:=\Omega \times (0,T) \\ \phantom{------,} u&=0 &\text{on } \partial \Omega \times (0,T)\\ \phantom{----,} u(.,0) &=\omega &\text{in } \Omega. \end{array} \right. \end{equation} where $\mu$ and $\omega$ are bounded Radon measures in $Q_T$ and $\Omega$ respectively and $g(u) \sim e^{a |u|^q} $ with $a>0$ and $q \geq 1$. We provide a sufficient condition in terms of fractional maximal potentials of $\mu$ and $\omega$ for solving (P).

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