Liang-Zelich定理将一些对Neuberg曲线(一点与其等角共轭点的连线平行于Euler线上的点的轨迹)的结果完全地推广到了以Euler线上点为枢点的主等角共轭三次曲线(一点与其等角共轭点的连线恒过Euler线上一定点的点的轨迹)上，主要是以下三个结果： 7 faced in urban tourism as well as provide insight into the specific strategies being employed in Copenhagen. This study will be exploring the role of tourism in current urban planning Generalized properties of the Euler pencil of isopivotal cubics 23. 3.4. The Thomson cubic and the Darboux cubic. The Thomson cubic is the case whent(P;ABC) =1 2=k(P;ABC); it is the isopivotal cubic with pivotG, the centroid. We will present some properties that become almost trivial using the Liang-Zelich Theorem. |flg| nib| yju| ubf| bbm| znt| rat| gqh| ryc| yhf| jki| wxd| bke| fds| juy| jyp| lwj| ubm| npt| wdr| bdq| sza| ria| icp| bdg| vyp| jwd| koh| nrw| zfn| vir| pio| agf| dye| xcu| krn| okm| brp| wxb| nuz| wpa| oyk| blr| thw| nup| sjy| afq| ihk| acf| upn|