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Thorvald Nicolai Thiele was born on December 24, 1838 and died on September 26, 1910. He was a famous mathematician, astronomer and statistician. He is best known for the interpolation and three body problem. He was the first to hypothesize Brownian motion which was derived from his study of cumulants. He founded the Hfnia Insurance Company and acted as their Mathematical Director. He also...
- The navel or umbilicus.
- In Greek archaeology: A central boss, as on a shield, a bowl, etc.
- A sacred stone in the temple of Apollo at Delphi, believed by the Greeks to mark the 'navel' or exact center-point of the earth.