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Higher integrability for singular doubly nonlinear systems
Kristian Moring1, Leah Schätzler2, Christoph Scheven1
1Fakultät für Mathematik, Universität Duisburg-Essen, Thea-Leymann-Str. 9, 45127 Essen, Germany.
This study proves a local higher integrability result for spatial gradients of weak solutions to doubly nonlinear parabolic systems. An intrinsic geometry considering both the solution and its gradient is key.
Area of Science:
- Partial Differential Equations
- Nonlinear Analysis
- Mathematical Physics
Background:
- Doubly nonlinear parabolic systems are crucial in modeling various physical phenomena.
- Understanding the regularity of weak solutions, particularly their spatial gradients, is essential for analyzing system behavior.
Purpose of the Study:
- To establish a local higher integrability result for the spatial gradient of weak solutions.
- To investigate doubly nonlinear parabolic systems within specific parameter ranges.
Main Methods:
- Development and application of an intrinsic geometry.
- The intrinsic geometry accounts for both the solution (u) and its spatial gradient (Du).
Main Results:
- A local higher integrability result for the spatial gradient (Du) of weak solutions is proven.
- The findings are applicable to doubly nonlinear parabolic systems within the specified parameter ranges.
Conclusions:
- The study provides a significant advancement in the regularity theory of weak solutions to these complex systems.
- The introduced intrinsic geometry offers a novel approach for analyzing related problems in nonlinear PDEs.
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