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Weak solutions of the three-dimensional hypoviscous elastodynamics with finite kinetic energy

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arxiv 2104.11872 v2 pith:2PJ3CDUS submitted 2021-04-24 math.AP

Weak solutions of the three-dimensional hypoviscous elastodynamics with finite kinetic energy

classification math.AP
keywords elastodynamicsenergyfinitehypoviscouskineticsolutionsthetaweak
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We construct weak solutions to the 3D hypoviscous incompressible elastodynamics with finite kinetic energy which was unknown in literatures. Our result holds for fractional hypoviscosity $(-\Delta)^\theta$, where $0\leq\theta<1$. The proof {consists of a convex integration scheme with new building blocks of 2D intermittency and suitable temporal correctors, which are motivated by} the inherent geometric structure of the viscoelastic equations.

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