Some counterexamples to Sobolev regularity for degenerate Monge-Amp`{e}re equations
Some counterexamples to Sobolev regularity for degenerate Monge-Amp`{e}re equations
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简并 Monge-Amp`{e}re 方程的 Sobolev 正则性的一些反例
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发表时间:
2015
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通讯作者:
Connor Mooney
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作者:
Connor Mooney
We construct a counterexample to $W^{2,1}$ regularity for convex solutions to $$det D^2u leq 1, quad u|_{partial Omega} = 0$$ in two dimensions. We also prove a result on the propagation of singularities in two dimensions that are logarithmically slower than Lipschitz. This generalizes a classical result of Alexandrov and is optimal by example.