convexity
https://plus.maths.org/content/category/tags/convexity
enConvex is complex
https://plus.maths.org/content/convexity
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<p>Convex or concave? It's a question we usually answer just by looking at something. It's convex if it bulges outwards, and concave if it bulges inwards. But when it comes to mathematical functions, things aren't that simple. A team of computer scientists from the Massachusetts Institute of Technology have recently shown that deciding whether a mathematical function is convex can be very hard indeed.</p>
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<div class="rightimage" style="width: 450px"><img src="https://plus.maths.org/content/sites/plus.maths.org/files/news/2011/convexity/convex.jpg" width="450" height="285" alt="graph of a convex funtion" /><p>A convex function. Image: <a href="http://en.wikipedia.org/wiki/File:ConvexFunction.svg">Eli Osherovich</a>.</p></div>
<p>Convex or concave? It's a question we usually answer just by
looking at something. It's convex if it bulges outwards and concave if it bulges inwards.</p><p><a href="https://plus.maths.org/content/convexity" target="_blank">read more</a></p>https://plus.maths.org/content/convexity#commentsmathematical realityconvexityoptimisationP versus NPWed, 03 Aug 2011 09:14:00 +0000mf3445529 at https://plus.maths.org/content