Hausdorff studied in Leipzig and taught mathematics there until 1910, when he became professor of mathematics in Bonn. When the Nazis came to power, Hausdorff, a Jew, felt that as a respected university professor he was immune. His abstract mathematics was denounced as "Jewish", useless and "un-German" and he lost his position in 1935. He sent his daughter to Great Britain but stayed with his wife in Germany. When in 1942 he could no longer avoid being sent to a concentration camp, he committed suicide together with his wife and sister-in-law.\n