Timeline for Are functions whose partial derivatives are simple functions dense in $W^{1,\infty}$?
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| Jul 28, 2015 at 9:56 | comment | added | Joonas Ilmavirta | To provide context, the answer is yes in one dimension and false in any dimension if "functions whose partial derivatives are simple functions" is replaced with "piecewise linear functions". See this question: mathoverflow.net/q/212458/55893 | |
| Jul 28, 2015 at 9:35 | history | asked | Buyang LI | CC BY-SA 3.0 |