1. 
   Haar measure
   (from the article `mathematics`) Yet another setting for Lebesgue`s ideas was to be the theory of Lie groups. The Hungarian mathematician Alfréd Haar showed how to define the concept ...
   Found op http://www.britannica.com/eb/a-z/h/1
   
   
2. 
   Haar measure
   In mathematical analysis, the Haar measure is a way to assign an "invariant volume" to subsets of locally compact topological groups and subsequently define an integral for functions on those groups. This measure was introduced by Alfréd Haar, a Hungarian mathematician, in 1933. Haar measures are ...
   Found op http://en.wikipedia.org/wiki/Haar_measure
   
   

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