New in MathWorld -- 2019

December 2019: 2 new entries, 5 modified

November 2019: 0 new entries, 6 modified

October 2019: 0 new entries, 1 modified

September 2019: 1 new entries, 5 modified

August 2019: 1 new entries, 4 modified

July 2019: 2 new entries, 17 modified

June 2019: 9 new entries, 34 modified

May 2019: 3 new entries, 24 modified

April 2019: 5 new entries, 23 modified

March 2019: 5 new entries, 9 modified

February 2019: 8 new entries, 28 modified

January 2019: 9 new entries, 34 modified

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