Mostradas en el tema anterior, son:
$ \begin{alignat}{2} &\enclose{circle}{\mspace{1mu} 1 \mspace{1mu}} \ \left( \dfrac{\partial S}{\partial V} \right)_{\! T} = \left( \dfrac{\partial P}{\partial T} \right)_{\! V} &\qquad& \enclose{circle}{\mspace{1mu} 2 \mspace{1mu}} \ \left( \dfrac{\partial S}{\partial P} \right)_{\! T} = - \left( \dfrac{\partial V}{\partial T} \right)_{\! P} \\[1em] &\enclose{circle}{\mspace{1mu} 3 \mspace{1mu}} \ \left( \dfrac{\partial T}{\partial P} \right)_{\! S} = \left( \dfrac{\partial V}{\partial S} \right)_{\! P} &\qquad& \enclose{circle}{\mspace{1mu} 4 \mspace{1mu}} \ \left( \dfrac{\partial T}{\partial V} \right)_{\! S} = - \left( \dfrac{\partial P}{\partial S} \right)_{\! V} \end{alignat} $
Regla nemotécnica para acordarse de ellas: