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Uniqueness of Steady Navier-Stokes under Large Data by Continuous Data Assimilation

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arxiv 2307.09538 v1 pith:T2I5WJ7L submitted 2023-07-18 math.AP math-phmath.MP

classification math.APmath-phmath.MP
keywords dataassimilationcontinuousequationslargemethodnavier-stokesobservations
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We propose a continuous data assimilation (CDA) method to address the uniqueness problem for steady Navier-Stokes equations(NSE). The CDA method incorporates spatial observations into the NSE, and we prove that with sufficient observations, the CDA-NSE system is well-posed even for large data where multiple solutions may exist. This CDA idea is in general helpful to determine solution for non-uniqueness partial differential equations(PDEs).

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