Abstract
In this article, we study initial and initial-boundary value problems for a non-strictly hyperbolic system whose characteristic speed is not smooth and takes values in
Funding statement: This work was done while the second author was a Raja Ramanna Fellow at TIFR CAM, Bangalore, India.
Acknowledgements
The authors are thankful to the anonymous referee for valuable comments and suggestions on an early version, which helped them to improve the paper in the present form.
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