- Carl Ludwig “Luz” Long (27 April 1913 – 14 July 1943) was a German Olympic long jumper who won the silver medal in the event at the 1936 Summer Olympics in Berlin and had a friendship with Jesse Owens, who won the gold medal in that event. Luz Long won the German long jump championship six times: in 1933, 1934, 1936, 1937, 1938, and 1939.
- Von Neumann paradox (Wikipedia)
In mathematics, the von Neumann paradox, named after John von Neumann, is the idea that one can break a planar figure such as the unit square into sets of points and subject each set to an area-preserving affine transformation such that the result is two planar figures of the same size as the original. This was proved in 1929 by John von Neumann, assuming the axiom of choice. It is based on the earlier Banach–Tarski paradox, which is in turn based on the Hausdorff paradox.