How to look up a math symbol?
Hopefully this question has a one word answer!
I want to be able to write a backwards epsilon of the sort used for set membership in mathmode. Lets say this command was called "\backin", then here would be an example use:
\Theta(f(n)) \backin g(n) \in O(h(n))
To say that g(n) is in both \Theta(f(n)) and O(h(n)), but with an ordering that kind of lays them out nicely in one line in a sort of greater-than-less-than analogy.
Do you know an easy way to do this? I searched around but could not find an example.