A singular minimizer of a smooth strongly convex functional in three dimensions

A singular minimizer of a smooth strongly convex functional in three dimensions
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三维光滑强凸函数的奇异最小化

DOI:
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发表时间:
2000
期刊:
影响因子:
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通讯作者:
Xiaodong Yan
Xiaodong Yan
中科院分区:
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文献类型:
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作者:
V. Sverák;Xiaodong Yan

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我们记得,如果存在一个常数ν > 0,则f称为强凸的,使得对所有n ∈ Mm×n,X ∈ Mm×n,不等式fp αp j β(X)<$i α <$j β ≥ ν| ξ| 2保持。在这里和下面我们将使用爱因斯坦的求和约定。我们将考虑I在W1,2(Ω)中极小元的正则性.这里的极小元是指函数u ∈ W1,2(Ω)使得对Ω紧支集的光滑函数φ:Ω → Rm,不等式I(u+φ)≥ I(u)成立。当f满足(?)时,不难看出u是极小元
We recall thatf is said to be strongly convex if there exists a constant ν > 0, such that for allξ ∈ Mm×n, X ∈ Mm×n, the inequalityf pαp j β (X)ξi αξ j β ≥ ν|ξ|2 holds. Here and in what follows we will be using Einstein’s summation convention. We shall consider the regularity of minimizers of I in W 1,2(Ω). Here by a minimizer we mean a function u ∈ W 1,2(Ω) such that for any smooth functionφ : Ω → Rm compactly supported in Ω the inequalityI(u+φ) ≥ I(u) holds. Whenf satisfies(∗), it is not difficult to see that u is a minimizer