I just came across this "subset" symbol in a PDF:
$$\Omega \subsetneq T$$
I've never seen it before, and I tried looking for it via Detexify (to no avail). What does it mean?
notation
I just came across this "subset" symbol in a PDF:
$$\Omega \subsetneq T$$
I've never seen it before, and I tried looking for it via Detexify (to no avail). What does it mean?
Best Answer
This means $\Omega$ is a proper subset of $T$. That is, $\Omega\subseteq T$ but $\Omega \neq T$.
For example, $\{1, 2, 3\}\subsetneq \{1, 2, 3, 4\}$.