Can someone help me understand the notation used here? I can't seem to figure out the meaning behind what comes after the "if condition".
If Adeline chooses $T$ \begin{equation} U_i=v\min\{e_i,e_j\}-e_i, \end{equation} where $i,j\in \{a,b\}$ but $j\neq i^2$ and $\min\{e_i,e_j\}=e_i(e_j)$ if $e_i\leq (>)e_j$.