Could you tell me what is the accepted notation for the set of limit points of a minimizing sequence. For example, if I have a function $f(x)$ and a sequence $x_t$ such that
$\lim f(x_t) = \inf f(x)$
I want a notation for the (possibly empty) set of limit points of all such sequences. I thought of using
$\arg \inf$
but it is a bit misleading because no argument may actually achieve the $\inf$.
Thanks for your help.