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    <name><![CDATA[Jean-claude]]></name>
    <location><![CDATA[Drexel Hill, PA]]></location>        
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      <rating>5</rating>
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  <read_at>Sun Jul 05 00:00:00 -0700 2009</read_at>
  <date_added>Sun Jul 05 10:25:53 -0700 2009</date_added>
  <date_updated>Sun Jul 05 10:40:25 -0700 2009</date_updated>
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    <body><![CDATA[This was a fun book.  Part autobiography of a mathematician hitting 40, part history lesson of mathematicians with a focus on those who worked in the field of group theory - and part museum tour of cool mathematical objects.  Examples include the Monster - an object that exists in 196883 dimensional space and of great importance to group theory - and the proof that hexagonal close packing is not the tightest way to fit 24-dimensional spheres, which amazingly has implications for the transmission of information.  The book doesn't have a lot of mathematical detail but that does not detract from it being very engaging. ]]></body>
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