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[[User:Catrinski|Catrinski]] ([[User talk:Catrinski|talk]]) 11:19, 27 February 2015 (UTC)
== Wrong example of pseudoconvex function in Properties section? ==
I might just be stupid, but doesn't the derivative of <math>x\mapsto x + x^3</math> vanish at <math>x=0</math>, without this being a local minimum of the function?
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