I am reading a computer science paper and have come across some notation that I am unfamiliar with.
it says to consider functions from $\mathbb{R}^N$ to $]-\infty,\infty]$
is this the same as writing $(-\infty,\infty]$?
to use another example, is this true:
$x \in ]4,6] \iff 4 < x \leq 6$