Starting with his Cahiers of 1813–1814, Poncelet developed the transformation that he called homology. As in Fig. 7.1, repeated from the last chapter, a simple form of homology is the projection of plane \(\pi \) to plane \(\pi '\) from an outside point, the center S.

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Homology as Developed by La Hire and Poncelet

  • Christopher Baltus

摘要

Starting with his Cahiers of 1813–1814, Poncelet developed the transformation that he called homology. As in Fig. 7.1, repeated from the last chapter, a simple form of homology is the projection of plane \(\pi \) to plane \(\pi '\) from an outside point, the center S.