what does this equation mean? I´m really bad in reading those, so if somebody explained it, I would really appreciate.
$f_i(x,y)\ge 0\quad\forall i\{0,1,2\}$
what does this equation mean? I´m really bad in reading those, so if somebody explained it, I would really appreciate.
$f_i(x,y)\ge 0\quad\forall i\{0,1,2\}$
The symbol "$\forall$" means "for all" or "for every".
"$\forall i \in \lbrace 0,1,2 \rbrace$" means "for all $i$ in the set $\lbrace 0,1,2 \rbrace$".