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
Emmanuel David Tannenbaum Emmanuel David Tannenbaum Emmanuel David Tannenbaum (June 28, 1978 – May 28, 2012) was an Israeli/American biophysicist and applied mathematician. He worked as a professor and researcher in the Department of Chemistry at the Ben-Gurion University of the Negev and the Department of Biology at the Georgia Institute of Technology, specializing in the fields of mathematical biology, systems biology, and quantum physics. Tannenbaum's initial work was in quantum chemistry as part of his Harvard University doctoral thesis where he developed a novel partial differential equation approach to the EBK quantization of nearly separable Hamiltonians in the quasi-integrable regime. Emmanuel Tannenbaum