0 0 m -1 0.333 l -1 -0.333 l h 0 0 m -1 0.333 l -1 -0.333 l h 0.6 0 0 0.6 0 0 e 0.4 0 0 0.4 0 0 e 0.6 0 0 0.6 0 0 e 0.5 0 0 0.5 0 0 e 0.6 0 0 0.6 0 0 e 0.4 0 0 0.4 0 0 e -0.6 -0.6 m 0.6 -0.6 l 0.6 0.6 l -0.6 0.6 l h -0.4 -0.4 m 0.4 -0.4 l 0.4 0.4 l -0.4 0.4 l h -0.6 -0.6 m 0.6 -0.6 l 0.6 0.6 l -0.6 0.6 l h -0.5 -0.5 m 0.5 -0.5 l 0.5 0.5 l -0.5 0.5 l h -0.6 -0.6 m 0.6 -0.6 l 0.6 0.6 l -0.6 0.6 l h -0.4 -0.4 m 0.4 -0.4 l 0.4 0.4 l -0.4 0.4 l h -0.43 -0.57 m 0.57 0.43 l 0.43 0.57 l -0.57 -0.43 l h -0.43 0.57 m 0.57 -0.43 l 0.43 -0.57 l -0.57 0.43 l h 0 0 m -1 0.333 l -1 -0.333 l h 0 0 m -1 0.333 l -0.8 0 l -1 -0.333 l h 0 0 m -1 0.333 l -0.8 0 l -1 -0.333 l h -1 0.333 m 0 0 l -1 -0.333 l 0 0 m -1 0.333 l -1 -0.333 l h -1 0 m -2 0.333 l -2 -0.333 l h 0 0 m -1 0.333 l -1 -0.333 l h -1 0 m -2 0.333 l -2 -0.333 l h 320 580 m 350 520 l 290 530 l 320 580 l 320 580 l 320 580 m 280 660 l 290 530 l 320 580 l 320 580 l 320 580 m 370 580 l 350 520 l 320 580 l Cell [4,2,0] 0 1 2 3 4 5 6 280 660 m 300 710 l 370 690 l 280 660 l 320 580 m 370 690 l 370 580 l 320 580 l 280 660 m 370 690 l 320 580 l 280 660 l 77.2727 0 0 77.2727 243.636 591.818 e 243.428 591.569 m 186.061 643.28 l $\alpha_{420}$ 320 580 m 350 520 l 290 530 l 320 580 l 320 580 l 320 580 m 280 660 l 290 530 l 320 580 l 320 580 l 320 580 m 370 580 l 350 520 l 320 580 l [2,0] is Gabriel $\rightarrow$ $\alpha_{20}$ is not$\\$ modified (NaN) 0 2 3 4 5 6 280 660 m 300 710 l 370 690 l 280 660 l 320 580 m 370 690 l 370 580 l 320 580 l 280 660 m 370 690 l 320 580 l 280 660 l $\alpha_{20}$ 290 530 m 320 580 l 29.1548 0 0 29.1548 305 555 e 304.883 555.015 m 334.509 555.015 l 320 580 m 350 520 l 290 530 l 320 580 l 320 580 l 320 580 m 280 660 l 290 530 l 320 580 l 320 580 l 320 580 m 370 580 l 350 520 l 320 580 l [0,4] is not Gabriel $\rightarrow$ $\alpha_{40} = \alpha_{420}$ 0 3 5 6 280 660 m 300 710 l 370 690 l 280 660 l 320 580 m 370 690 l 370 580 l 320 580 l 280 660 m 370 690 l 320 580 l 280 660 l $\alpha_{40}$ 290 530 m 280 660 l 320 580 m 350 520 l 290 530 l 320 580 l 320 580 l 320 580 m 280 660 l 290 530 l 320 580 l 320 580 l 320 580 m 370 580 l 350 520 l 320 580 l 0 1 2 3 5 6 280 660 m 300 710 l 370 690 l 280 660 l 320 580 m 370 690 l 370 580 l 320 580 l 280 660 m 370 690 l 320 580 l 280 660 l $\alpha_{42}$ 4 406.093 497.775 m 446.094 418.092 l 44.5799 0 0 44.5799 425.934 457.774 e 425.854 457.774 m 470.795 457.774 l [2,4] is Gabriel $\rightarrow$ $\alpha_{42}$ is not modified (NaN) 205.028 596.091 m 110.946 544.02 l 280.768 588.99 m 280.768 547.57 l 341.123 594.316 m 413.904 554.079 l For all faces of [4,2,0] N.B. : is Gabriel on a single point has no sense. Dimension =2 - $\sigma$ = [4,2,0] 247.333 430.892 m 311.764 430.892 l 1 4 1 2 65.192 0 0 65.192 285 595 e