Question

What does this mean? ∈ What does this mean? ∈ @Mathematics

Answer 1

an element of

Answer 2

element of or belongs to

Answer 3

Yeah, Wikipedia is great for math symbols. :)

Answer 4

here is an example for using that symbol:
If we have
\[\mathbb{N}=\{1,2,3,4,...\}\],
then we can say \[5\in \mathbb{N}\]
but
\[5.2 \notin \mathbb{N}\]

Answer 5

Oh okay thanks!