On Entropy Solutions of Scalar Conservation Laws with Discontinuous Flux
Tóm tắt
We introduce the notion of entropy solutions (e.s.) to a conservation law with an arbitrary jump continuous flux vector and prove the existence of the largest and the smallest e.s. to the Cauchy problem. The monotonicity and stability properties of these solutions are also established. In the case of a periodic initial function, we derive the uniqueness of e.s. Generally, the uniqueness property can be violated, which is confirmed by an example. Finally, we prove that in the case of a single space variable a weak limit of a sequence of e.s. is an e.s. as well (under the requirement of the spatial periodicity of the limit Young measure).
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