在n维射影空间Pn中,给出了用帕普斯定理来证明德萨格定理的另一个方法。
Give a method to prove Desargues Theorem with Pappus Theorem on n-dimensional projective space P ~ n.
用帕普斯&古尔丁定理解释喇叭悖论
New Explanation of Paradox of Torricelli ′ s Trumpet Using Pappus-Guldin Theorem