Spiegelgasse 1, Lecture Room 0.003
We will explain two results about (linear and nonlinear) transport equations, quasiconformal maps, and vector fields with unbounded divergence. Originally, these results are motivated by a difficult problem on Muckenhoupt weights and elliptic PDE. However, classical harmonic analysis tools allow to reformulate this problem in variational BMO terms, and then a theorem by H. M. Reimann brings naturally the connection to the transport theory.
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