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Quarterly of Applied Mathematics

Quarterly of Applied Mathematics

Online ISSN 1552-4485; Print ISSN 0033-569X

   
 
 

 

The relative entropy method for inhomogeneous systems of balance laws


Author: Cleopatra Christoforou
Journal: Quart. Appl. Math. 79 (2021), 201-227
MSC (2010): Primary 35L65, 35A02, 35B35; Secondary 35Q74, 35Q35, 35L45, 35K45
DOI: https://doi.org/10.1090/qam/1577
Published electronically: August 18, 2020
MathSciNet review: 4246491
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Abstract: General hyperbolic systems of balance laws with inhomogeneity in space and time in all constitutive functions are studied in the context of relative entropy. A framework is developed in this setting that contributes to a measure-valued weak vs. strong uniqueness theorem, a stability theorem of viscous solutions and a convergence theorem as the viscosity parameter tends to zero. The main goal of this paper is to develop hypotheses under which the relative entropy framework can still be applied. Examples of systems with inhomogeneity that have different characteristics are presented and the hypotheses are discussed in the setting of each example.


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Additional Information

Cleopatra Christoforou
Affiliation: Department of Mathematics and Statistics, University of Cyprus, Nicosia 1678, Cyprus
MR Author ID: 776610
ORCID: 0000-0003-4467-3322
Email: christoforou.cleopatra@ucy.ac.cy

Received by editor(s): June 4, 2020
Received by editor(s) in revised form: June 19, 2020
Published electronically: August 18, 2020
Additional Notes: The author was supported in part by the Internal grant SBLawsMechGeom #21036 from the University of Cyprus
Article copyright: © Copyright 2020 Brown University