most recent 30 from http://mathoverflow.net 2013-06-20T06:18:39Z http://mathoverflow.net/feeds/user/14985 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://mathoverflow.net/questions/64425/show-that-uxx2-is-quasi-convex Erika Nagy 2011-05-09T20:30:44Z 2011-05-09T21:14:09Z

<p>Show that u(x)=x^2 is quasi-convex.</p>