• Functionality II. The assignment $f\mapsto f^{-1}$ defines a function
    \[ \webleft (-\webright )^{-1}_{X,Y}\colon \mathsf{Sets}\webleft (X,Y\webright ) \to \mathsf{Pos}\webleft (\webleft (\mathcal{P}\webleft (Y\webright ),\subset \webright ),\webleft (\mathcal{P}\webleft (X\webright ),\subset \webright )\webright ). \]

Noticed something off, or have any comments? Feel free to reach out!


You can also use the contact form below: