# Mathematical Sciences Research Institute

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# Seminar

A subelliptic divergence-curl inequality October 26, 2011 (11:30 AM PDT - 12:30 PM PDT)
Location: MSRI: Simons Auditorium
Speaker(s) Yi Wang (Stanford University)
Description No Description

Video
In this talk, I will talk about the approximation of non-isotropic $\dot{NL}^{1,Q}$ functions by $L^\infty$ functions on stratified homogeneous groups, generalizing a result of Bourgain-Brezis. I will then present some applications of this result, including how to derive a divergence-curl inequality for $\bar{\partial}_b$ on Heisenberg group $H^n$.