Poincaré inequality
In mathematics , the Poincaré inequality is a result in the theory of Sobolev spaces , named after the French mathematician Henri Poincaré . 
<triplet> Poincaré inequality <subj> Henri Poincaré <obj> named after <triplet> mathematician <subj> mathematics <obj> field of this occupation <triplet> Henri Poincaré <subj> mathematics <obj> field of work