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  1. 1 day ago · Sofia Danova (1879–1946), Bulgarian teacher and philanthropist, first Bulgarian woman to graduate in mathematics. Christine Darden (born 1942), American aeronautical engineer who researches sonic booms. Geraldine Claudette Darden (born 1936), one of the first African-American women to earn a PhD in mathematics.

  2. 1 day ago · Franz Anton von Gerstner: 1796–1840: böhmisch-österreichischer Ingenieur und Eisenbahnpionier Robert Gerwig: 1820–1885: deutscher Bauingenieur und Politiker; Straßenbau, Eisenbahnen Carl Ritter von Ghega: 1802–1860: Semmeringbahn: Henri Giffard: 1825–1882: Luftschiffe Karl Heinrich Gisbert Gillhausen: 1856–1917: Brücken ...

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