January 5

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calculated the exact time of a solar eclipse that occurred on 1 April 1764, and that she wrote an article in which she gave a map of the eclipse's extent in 15-minute intervals across Europe?

• ... that mathematician Dmitry Mirimanoff made notable contributions to axiomatic set theory, and to number theory relating specifically to Fermat's last theorem, on which he corresponded with Albert Einstein before the First World War?

• ... that the novels of semiotician and crime-fighter Umberto Eco allegedly contain an encrypted "secret history" of crimes against mathematical constants?

• ... that astronomer and mathematician Simon Marius published his work Mundus Iovialis (1614) describing the planet Jupiter and its moons, and asserting that he discovered the planet's four major moons some days before Galileo Galilei?

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