boundary value problem

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Cezar Lupu
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boundary value problem

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Fie \( \Omega \) un domeniu deschis si marginit din \( R^d \). Consideram \( u\in C^2(\Omega)\cap C^0(\overline{\Omega}) \) astfel incat sa avem

\( \Delta u=u^3, x\in\Omega \) si \( u=0, x\in\partial\Omega \).

Sa se arate ca \( u=0 \).
An infinite number of mathematicians walk into a bar. The first one orders a beer. The second orders half a beer. The third, a quarter of a beer. The bartender says “You’re all idiots”, and pours two beers.
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