O Tannenbaum O Tannenbaum "" (; "O fir tree", English: "O Christmas Tree") is a German Christmas song. Based on a traditional folk song, it became associated with the traditional Christmas tree by the early 20th century and sung as a Christmas carol. The modern lyrics were written in 1824, by the Leipzig organist, teacher and composer Ernst Anschütz. A "Tannenbaum" is a fir tree. The lyrics do not actually refer to Christmas, or describe a decorated Christmas tree. Instead, they refer to the fir's evergreen quality as a symbol of constancy and faithfulness. Anschütz based his text on a 16th-century Silesian
Allen Tannenbaum Tannenbaum is a biophysicist and applied mathematician. Allen Tannenbaum Allen Robert Tannenbaum (born January 25, 1953) is an American/Israeli applied mathematician and presently Distinguished Professor of Computer Science and Applied Mathematics & Statistics at the State University of New York at Stony Brook. He is also Visiting Investigator of Medical Physics at Memorial Sloan Kettering Cancer Center in New York City. He has held a number of other positions in the United States, Israel, and Canada including the Bunn Professorship of Electrical and Computer Engineering and Interim Chair, and Senior Scientist at the Comprehensive Cancer Center at the University of