Mathematics – Analysis of PDEs
Scientific paper
2011-09-18
Mathematics
Analysis of PDEs
Scientific paper
This paper presents a new observability estimate for parabolic equations in $\Omega\times(0,T)$, where $\Omega$ is a convex domain. The observation region is restricted over a product set of an open nonempty subset of $\Omega$ and a subset of positive measure in $(0,T)$. This estimate is derived with the aid of a quantitative unique continuation at one point in time. Applications to the bang-bang property for norm and time optimal control problems are provided.
Phung Kim Dang
Wang Gengsheng
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