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arXiv math/0602558math.AP
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双散度型椭圆型方程解的渐近性

Asymptotics for solutions of elliptic equations in double divergence form

Vladimir Maz'ya, Robert McOwen

摘要:

研究非发散型椭圆算子伴随方程的弱解及其在内点的渐近性质。我们假设系数a_{ij}是有界的、可测的、复值函数,其接近δ_{ij},但可能以缓慢的速率。我们的主要结果是一个明确的公式的领导渐近项的解决方案,最温和的奇异性在x=0。作为结果,我们得到了解的L^p-范数的上下估计,以及当r趋于零时解在L^p-均值中有界或趋于零的充要条件.

英文摘要:

We consider weak solutions of the adjoint equation for an elliptic operator in nondivergent form, and their asymptotic properties at an interior point. We assume that the coefficients a_{ij} are bounded, measurable, complex-valued functions that approach δ_{ij}, but possibly at a slow rate. Our main result is an explicit formula for the leading asymptotic term for solutions with a most a mild singularity at x=0. As a consequence, we obtain upper and lower estimates for the L^p-norm of solutions, as well as necessary and sufficient conditions for solutions to be bounded or tend to zero in L^p-mean as r tends to zero.

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