====== Smin ======

###
The $S^-$ operator is defined as:
\begin{equation}
S^- = \sum_{\tau} a^{\dagger}_{\tau\downarrow}a^{\phantom{\dagger}}_{\tau\uparrow}.
\end{equation}
The equivalent operator in Quanty is created by:
<code Quanty Example.Quanty>
OppSmin = NewOperator("Smin", NF, IndexUp, IndexDn)
</code>
###

===== Table of contents =====
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