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Uniqueness of semi-concave weak solutions for Hamilton-Jacobi equations

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arxiv 2402.07665 v2 pith:R3MMM6IL submitted 2024-02-12 math.AP

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keywords solutionhamilton-jacobiweakadmitsconvexnonlinearitysemi-concaveviscosity
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It is well known that when the nonlinearity is convex, the Hamilton-Jacobi PDE admits a unique semi-convex weak solution, which is the viscosity solution. In this paper, motivated by problems arising from spin glasses, we show that if the Hamilton-Jacobi PDE with strictly convex nonlinearity and regular enough initial condition admits a semi-concave weak solution, then this solution is the viscosity solution.

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  1. The Free Energy of an Enriched Continuous Random Energy Model in the Weak Correlation Regime

    math.PR 2025-08 accept novelty 6.0 of 10

    The enriched CREM free energy in the weak correlation regime equals the maximum over one parameter of a simple formula involving t, the path q, and ln 2, and this value is independent of the covariance function A.

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