The geometry of maximal development and shock formation for the Euler equations in multiple space dimensions

S Shkoller, V Vicol - Inventiones mathematicae, 2024 - Springer
We construct a fundamental piece of the boundary of the maximal globally hyperbolic
development (MGHD) of Cauchy data for the multi-dimensional compressible Euler …

Sharp non-uniqueness of weak solutions to 3D magnetohydrodynamic equations: Beyond the Lions exponent

Y Li, Z Zeng, D Zhang - Journal of Functional Analysis, 2024 - Elsevier
We prove the non-uniqueness of weak solutions to 3D hyper viscous and resistive MHD in
the class L t γ W xs, p, where the viscosity and resistivity can be larger than the Lions …

Non-uniqueness of weak solutions to 3D magnetohydrodynamic equations

Y Li, Z Zeng, D Zhang - Journal de Mathématiques Pures et Appliquées, 2022 - Elsevier
We prove the non-uniqueness of weak solutions to 3D magnetohydrodynamic (MHD for
short) equations. The constructed weak solutions do not conserve the magnetic helicity and …

On non-uniqueness of continuous entropy solutions to the isentropic compressible Euler equations

V Giri, H Kwon - Archive for Rational Mechanics and Analysis, 2022 - Springer
We consider the Cauchy problem for the isentropic compressible Euler equations in a three-
dimensional periodic domain under general pressure laws. For any smooth initial density …

Probabilistic descriptions of fluid flow: a survey

D Gallenmüller, R Wagner, E Wiedemann - Journal of Mathematical Fluid …, 2023 - Springer
Fluids can behave in a highly irregular, turbulent way. It has long been realised that,
therefore, some weak notion of solution is required when studying the fundamental partial …

Sharp non-uniqueness of weak solutions to 3D magnetohydrodynamic equations

Y Li, Z Zeng, D Zhang - arxiv preprint arxiv:2208.00624, 2022 - arxiv.org
We prove the non-uniqueness of weak solutions to 3D hyper viscous and resistive MHD in
the class $ L^\gamma_tW^{s, p} _x $, where the exponents $(s,\gamma, p) $ lie in two …

The geometry of maximal development and shock formation for the Euler equations in multiple space dimensions

S Shkoller, V Vicol - arxiv preprint arxiv:2310.08564, 2023 - arxiv.org
We construct a fundamental piece of the boundary of the maximal globally hyperbolic
development (MGHD) of Cauchy data for the multi-dimensional compressible Euler …

Non-uniqueness for the compressible Euler–Maxwell equations

S Mao, P Qu - Calculus of Variations and Partial Differential …, 2024 - Springer
We consider the Cauchy problem for the isentropic compressible Euler–Maxwell equations
under general pressure laws in a three-dimensional periodic domain. For any smooth initial …

Glimm's method and density of wild data for the Euler system of gas dynamics

E Chiodaroli, E Feireisl - Nonlinearity, 2024 - iopscience.iop.org
We adapt Glimm's approximation method to the framework of convex integration to show
density of wild data for the (complete) Euler system of gas dynamics. The desired infinite …

Which measure-valued solutions of the monoatomic gas equations are generated by weak solutions?

D Gallenmüller, E Wiedemann - Archive for Rational Mechanics and …, 2023 - Springer
Contrary to the incompressible case, not every measure-valued solution of the compressible
Euler equations can be generated by weak solutions or a vanishing viscosity sequence. In …