Abstract
AbstractWe obtain several new regularity results for solutions of scalar conservation laws satisfying the genuine nonlinearity condition. We prove that the solutions are continuous outside of the jump set, which is codimension one rectifiable. We show that the entropy dissipation vanishes away from the closure of the jump set. We prove that the solution decays algebraically in L∞ as t → ∞, and we compute the presumably optimal decay rate. All these results are based on a local oscillation estimate that is obtained properly adapting some ideas of De Giorgi from the context of elliptic equations. © 2018 Wiley Periodicals, Inc.
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