\usepackage{amsmath,amssymb,amsfonts} 515.344236 231.5 m 408.327882 293.285921 l 408.327882 169.714079 l h 320.284413 246.5 m 234 332.784413 l 147.715587 246.5 l 233 160.215587 l h 4.506375 0 0 4.506375 234.171598 332.011834 e 4.506375 0 0 4.506375 234.171598 332.011834 e 4.506375 0 0 4.506375 234.171598 332.011834 e 147.307692 247.307692 m 105.526966 0 0 -105.526966 251.22484 228.945585 231.923077 332.692308 a 234.230769 334.230769 m 74.74089 0 0 74.74089 220.979361 260.673983 147.307692 248.076923 a 234.230769 158.846154 m 18.011628 0 0 18.011628 235.769231 140.90035 237.307692 158.846154 a 512.996694 230.500132 m 511.996708 167.501007 l 4.506375 0 0 4.506375 234.171598 332.011834 e 232.69276 331.152872 m 148.078279 246.538392 l 145.770611 246.538392 m 233.461982 159.616243 l 233.580222 159.823144 m 319.378334 246.212967 l 4.506375 0 0 4.506375 234.171598 332.011834 e 4.506375 0 0 4.506375 234.171598 332.011834 e 4.506375 0 0 4.506375 234.171598 332.011834 e 4.506375 0 0 4.506375 234.171598 332.011834 e 205.815185 304.405601 m 185.788001 284.378418 l 180.781206 211.552296 m 194.891267 197.897399 l 264.986408 191.525113 m 285.468755 212.00746 l $e_1$ $e_2$ $\psi(e_2)$ $\psi(e_1)$ $\psi(e_3)$ $e_3$ 239.637402 269.235415 m 16.021445 0 0 16.021445 239.862891 253.215557 255.393015 249.278305 a $C_e$ $e$ $\Phi_1$ $\Phi_2$ $P$