Das Kegelschnittgewebe und seine Hessesche Kurve

Hermann Grassmann

Chapter Abschnitt 57 in Projektive Geometrie der Ebene Unter Benutzung der Punktrechnung Dargestellt, 1927, pp 330-345 from Springer

Abstract: Zusammenfassung Es seien P, Q, R die extensiven Brüche für drei Polarsysteme zweiter Klasse, die linear unabhängig voneinander sind, die also nicht einer und derselben Schar von Polarsystemen angehören, und es sei: 1 P = a 1 , a 2 , a 3 E 1 , E 2 , E 8 , $$ P = \frac{{a_1 ,a_2 ,a_3 }} {{E_1 ,E_2 ,E_8 }}, $$ 2 Q = b 1 , b 2 , b 3 E 1 , E 2 , E 3 , $$ P = \frac{{a_1 ,a_2 ,a_3 }} {{E_1 ,E_2 ,E_8 }}, $$ 3 R = c 1 , c 2 , c 3 E 1 , E 2 , E 3 . $$ R = \frac{{c_1 ,c_2 ,c_3 }} {{E_1 ,E_2 ,E_3 }}. $$

Date: 1927
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DOI: 10.1007/978-3-663-15843-1_19

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