How can I get an expectation symbol which behaves like $\sum$
? Specifically, I want the underscore to be like that of a summation. At the moment I use
$$\mathbb{E}_{x\in A}$$
However, I do not like this. It feels like I am writing a sum as
$$\Sigma_{x\in A}$$
Whereas the alternative
$$\sum_{x\in A}$$
is much nicer when in a centered equation. (The underscore appears directly below the sigma, instead of slight infront and below.)
Is there a way to make an expectation symbol which behaves like $$\sum$$
rather then $$\Sigma$$
?
Best Answer
Use
\mathop{\mathbb{E}}
to get math operator spacing and limits behaviour. Or\mathop{{}\mathbb{E}}
If you want E to remain on the baseline.