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Smooth subsolutions of the discounted Hamilton-Jacobi equations

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arxiv 2007.10687 v4 pith:LR2MZXLX submitted 2020-07-21 math.DS math.AP

Smooth subsolutions of the discounted Hamilton-Jacobi equations

classification math.DS math.AP
keywords subsolutionsdiscountedhamilton-jacobiadditionalapplicationsassociatedassumptionsattractor
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For the discounted Hamilton-Jacobi equation,$$\lambda u+H(x,d_x u)=0, \ x \in M, $$we construct $C^{1,1}$ subsolutions which are indeed solutions on the projected Aubry set. The smoothness of such subsolutions can be improved under additional hyperbolicity assumptions. As applications, we can use such subsolutions to identify the maximal global attractor of the associated conformally symplectic flow and to control the convergent speed of the Lax-Oleinik semigroups

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