单词	projective geometry
释义	projective geometry noun : a branch of geometry that deals with the properties of configurations that are unaltered by projection Example Sentences Recent Examples on the Web Nima Arkani-Hamed, a professor in the institute’s School of Natural Sciences, was talking about recent research that had brought him into contact with some beautiful, elementary, albeit ancient, results in projective geometry. Siobhan Roberts, New York Times, 3 Mar. 2020 Word History First Known Use 1878, in the meaning defined above
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