Place the start and end index above and below the symbol ||

Question

I use this command

$$E = \parallel_{i=1}^{8}E_i$$

to get this result:

But I would like the start and end indexes to be above and below, not overwritten and subscribed, like this:

I found this thread, but I'm not understanding what I'm doing wrong that doesn't work: Math \vdash with top and down index

\DeclareMathOperator{8}{\Parallel}{\parallel}
$$ E = \parallel_{i=1}^{8}E_i $$
[
  \Parallel_{i=1}^{8}E_i
]

You may want to use \DeclareMathOperator*. But the {8} is completely out of place — egreg, Jun 27 '22 at 17:42
I tried to replicate what was in that discussion. Instead of the '{8}' was the '*' that stood on top — anijahzarri, Jun 27 '22 at 17:55

score 1 · Answer 1 · answered Jun 27 '22 at 17:50

1

I don't quite understand the syntax, but I was able to solve using this feature directly in the text:

\def\Parallel{\mathop{\parallel}}
$$
  E = \Parallel_{i=1}^8 E_i
$$

answered Jun 27 '22 at 17:50

anijahzarri

1 Answers1