New in MathWorld -- 2009

December 2009: 15 new entries, 83 modified

November 2009: 0 new entries, 3 modified

October 2009: 12 new entries, 11 modified

September 2009: 3 new entries, 4 modified

August 2009: 1 new entries, 7 modified

July 2009: 0 new entries, 16 modified

June 2009: 8 new entries, 33 modified

May 2009: 8 new entries, 66 modified

April 2009: 17 new entries, 47 modified

March 2009: 24 new entries, 155 modified

February 2009: 18 new entries, 87 modified

January 2009: 16 new entries, 211 modified

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