Let $\varphi : = (1 + \sqrt{5}) / 2$ be the D2137: Basic real golden ratio such that

(i)	\begin{equation} \varphi_* : = 1 - \varphi \end{equation}

Then

(1)	\begin{equation} \varphi = 1 + \frac{1}{\varphi} \end{equation}
(2)	\begin{equation} \varphi_* = 1 + \frac{1}{\varphi_*} \end{equation}