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Stationary and discontinuous weak solutions of the Navier-Stokes equations

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arxiv 1901.07485 v5 pith:LFPFVXQ5 submitted 2019-01-22 math.AP

classification math.AP
keywords stationarysolutionsweakdiscontinuousenergyequationsnavier-stokesprove
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We prove that there exists a nontrivial finite energy periodic stationary weak solution to the 3D Navier-Stokes equations (NSE). The construction relies on a convex integration scheme utilizing new stationary building blocks designed specifically for the NSE. The constructed family of approximate stationary solutions is also used to prove the existence of weak solutions of the NSE with energy profiles discontinuous on a dense set of positive Lebesgue measure.

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  1. Non-uniqueness of weak solutions to 2D hypoviscous Navier-Stokes equations

    math.AP 2019-08 accept novelty 6.0 of 10

    Every 2D hypoviscous Navier-Stokes system with fractional Laplacian exponent theta below 1 admits nonunique C^0_t L^2_x weak solutions, including solutions with compact temporal support.

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