Timeline for When is the adjoint of a hypoelliptic operator also hypoelliptic?
Current License: CC BY-SA 3.0
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| Jul 22, 2015 at 14:13 | comment | added | Bob Yuncken | Could you explain why the operators $\frac{\partial}{\partial t} + t \Delta_x$ and $-\frac{\partial}{\partial t} + t \Delta_x$ are hypoelliptic and not, respectively? | |
| Jan 23, 2013 at 15:35 | vote | accept | vkrouglov | ||
| Mar 5, 2012 at 14:49 | history | answered | Bazin | CC BY-SA 3.0 |