$w$	Waste	$w\in \left\{1,2,...,W\right\}$
$m,n$	Waste production node	$m,n\in \left\{1,2,...,M\right\}$
$c$	Potential collection center	$c\in \left\{1,2,...,C\right\}$
$v$	Vehicle	$v\in \left\{1,2,...,V\right\}$
$t$	Time period	$t\in \left\{1,2,...,T\right\}$