Abstract
We establish a weak–strong uniqueness result for the isentropic compressible Euler equations, that is: As long as a sufficiently regular solution exists, all energy-admissible weak solutions with the same initial data coincide with it. The main novelty in this contribution, compared to previous literature, is that we allow for possible vacuum in the strong solution.
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Acknowledgements
SSG and AJ acknowledge the support of the Department of Atomic Energy, Government of India, under project no. 12-R &D-TFR-5.01-0520. SSG would like to thank Inspire faculty-research grant DST/INSPIRE/04/2016/000237. We would like to thank anonymous referees for their comments and suggestions.
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This article is part of the section “Theory of PDEs” edited by Eduardo Teixeira.
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Ghoshal, S.S., Jana, A. & Wiedemann, E. Weak–strong uniqueness for the isentropic Euler equations with possible vacuum. Partial Differ. Equ. Appl. 3, 54 (2022). https://doi.org/10.1007/s42985-022-00191-2
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DOI: https://doi.org/10.1007/s42985-022-00191-2