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Global weak solutions for generalized SQG in bounded domains

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arxiv 1704.01462 v1 pith:PPQZ4UUQ submitted 2017-04-05 math.AP

Huy Quang Nguyen This is my paper · ORCID
classification math.AP
keywords boundeddomainsweakequationsgeneralizedglobalscalarsolutions
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abstract

We prove the existence of global $L^2$ weak solutions for a family of generalized inviscid surface-quasi geostrophic (SQG) equations in bounded domains of the plane. In these equations, the active scalar is transported by a velocity field which is determined by the scalar through a more singular nonlocal operator compared to the SQG equation. The result is obtained by establishing appropriate commutator representations for the weak formulation together with good bounds for them in bounded domains.

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