Lifting in Sobolev spaces

Abstract

International audienceWe characterize the couples (s,p)(s,p) with the following property: if uu is a complex-valued unimodular map in Ws,pW^{s,p}, then uu has (locally) a phase in Ws,pW^{s,p}

Similar works

This paper was published in Hal-Diderot.

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