L 圖
schéma L
https://upload.wikimedia.org/wikipedia/commons/7/75/Sch%C3%A9ma_L.png
$ \begin{array}{c} \cancel S & \dashrightarrow & a' \\ & \swarrow & \\ a & \leftarrow & A \end{array}.
$ a=\varphi^{-1},$ a=\frac 1{1+a}
$ a\Doteq 0.6180339887498948
https://gyazo.com/91976a7a718892f1c8be4db9d42775c9
黃金數$ \varphi=\frac{\varphi+1}\varphi $ \varphi=\frac{1+\sqrt 5}2\Doteq 1.618033988749895
對象 x = 空孔
$ A\dashrightarrow\cancel S: 象徵界 S の充溢した parole $ \cancel S(a)\cancel A