April 16, 1898 (the Hundred Days, March 26), birth of German mathematician Helmut Keneizeer, the. birth of, �� Keneizeer,

Helmut "target =" _blank "> Helmut Keneizeer (1898 16 1973 August 23, 2011), the German mathematical home, learn in group theory and topology contribution to the most famous results prove that the prime decomposition of three-dimensional manifolds exist, at the same time created the concept of the normal surface. (l $ dj��.��r��)
he has studied f ( f (x)) = ex's solution.
1958 to 1959, he is on Wolfach, director of the Institute of Mathematics his father Adolf Keneizeer and the son Martin grams within Zell is a mathematician.