# Math Help - Math Notation Question

1. ## Math Notation Question

In the following:
S = {a_n | n>=1} where _ means "subscript follows"

what does the large thing mean in english words?

For example (a completely random example); ∈ means "element of."

Any input would be greatly appreciated!

2. Originally Posted by s3a
In the following:
S = {a_n | n>=1} where _ means "subscript follows"

what does the large thing mean in english words?

For example (a completely random example); ∈ means "element of."

Any input would be greatly appreciated!
$S$ is the set of all terms, $a_n$ , such that $n \ge 1$

... the actual symbol is just a vertical line about the same size as half the notation for absolute value.