Are You Sure (October 14)
Are You Sure ...
• ... that mathematician Benoit Mandelbrot (20 November 1924 – 14 October 2010) was a pioneer of fractal geometry; that he coined the word "fractal"; and that he discovered the Mandelbrot set?
• ... that mathematician Abraham Fraenkel (17 February 1891 – 15 October 1965) contributed to set theory and foundational mathematics, that he published two papers which sought to improve Ernst Zermelo's axiomatic system; and that the result is Zermelo–Fraenkel set theory?
• ... that civil engineer and American intelligence officer Robert Furman (21 August 1915 – 14 October 2008) was the chief of foreign intelligence for the Manhattan Engineer District, directing espionage against the German nuclear energy project during the Second World War; that Furman participated in the Alsos Mission, which conducted a series of operations task with placing all uranium in Europe into Allied hands, and which, near the end of the war, rounded up German atomic scientists; that Furman personally escorted half of the uranium-235 necessary for the Little Boy atomic bomb to the Pacific island of Tinian; and that he was a key figure overseeing the construction of The Pentagon building?