births
Käte Fenchel, German mathematician (died 1983)
Related Wikipedia articles
Käte Fenchel
German mathematician (1905–1983)
Käte Fenchel née Käte Sperling was a German-born Jewish mathematician, best known for her work on non-abelian groups.Source: Wikipedia (CC BY-SA)
December 21
Day of the year
December 21 is the 355th day of the year in the Gregorian calendar; 10 days remain until the end of the year.Source: Wikipedia (CC BY-SA)