二十九角形
λ 1 = − 1 + u 1 + u 2 + u 3 + u 4 + u 5 + u 6 7 λ 2 = − 1 + u 1 σ 6 + u 2 σ 5 + u 3 σ 4 + u 4 σ 3 + u 5 σ 2 + u 6 σ 7 λ 3 = − 1 + u 1 σ 5 + u 2 σ 3 + u 3 σ + u 4 σ 6 + u 5 σ 4 + u 6 σ 2 7 λ 4 = − 1 + u 1 σ 4 + u 2 σ + u 3 σ 5 + u 4 σ 2 + u 5 σ 6 + u 6 σ 3 7 λ 5 = − 1 + u 1 σ 3 + u 2 σ 6 + u 3 σ 2 + u 4 σ 5 + u 5 σ + u 6 σ 4 7 λ 6 = − 1 + u 1 σ 2 + u 2 σ 4 + u 3 σ 6 + u 4 σ + u 5 σ 3 + u 6 σ 5 7 λ 7 = − 1 + u 1 σ + u 2 σ 2 + u 3 σ 3 + u 4 σ 4 + u 5 σ 5 + u 6 σ 6 7 {\displaystyle {\begin{aligned}&\lambda _{1}={\frac {-1+u_{1}+u_{2}+u_{3}+u_{4}+u_{5}+u_{6}}{7}}\,\\&\lambda _{2}={\frac {-1+u_{1}\sigma ^{6}+u_{2}\sigma ^{5}+u_{3}\sigma ^{4}+u_{4}\sigma ^{3}+u_{5}\sigma ^{2}+u_{6}\sigma }{7}}\,\\&\lambda _{3}={\frac {-1+u_{1}\sigma ^{5}+u_{2}\sigma ^{3}+u_{3}\sigma +u_{4}\sigma ^{6}+u_{5}\sigma ^{4}+u_{6}\sigma ^{2}}{7}}\,\\&\lambda _{4}={\frac {-1+u_{1}\sigma ^{4}+u_{2}\sigma +u_{3}\sigma ^{5}+u_{4}\sigma ^{2}+u_{5}\sigma ^{6}+u_{6}\sigma ^{3}}{7}}\,\\&\lambda _{5}={\frac {-1+u_{1}\sigma ^{3}+u_{2}\sigma ^{6}+u_{3}\sigma ^{2}+u_{4}\sigma ^{5}+u_{5}\sigma +u_{6}\sigma ^{4}}{7}}\,\\&\lambda _{6}={\frac {-1+u_{1}\sigma ^{2}+u_{2}\sigma ^{4}+u_{3}\sigma ^{6}+u_{4}\sigma +u_{5}\sigma ^{3}+u_{6}\sigma ^{5}}{7}}\,\\&\lambda _{7}={\frac {-1+u_{1}\sigma +u_{2}\sigma ^{2}+u_{3}\sigma ^{3}+u_{4}\sigma ^{4}+u_{5}\sigma ^{5}+u_{6}\sigma ^{6}}{7}}\,\\\end{aligned}}}