I was asked to ID the following, but can't figure out what it's for. Laplace Transform of acceleration (*x double-dot*)?

*(Sorry that I can't provide a sharper image - this is all I have access to)*

I don't recognize the infinite sum, and there are some squiggles around the `r`

in the denominator that I can't quite make out.

I tried to transcribe it, but since I'm not entirely sure what's going on in the denominator, I can't be certain it's accurate.

It seems odd to me to see a negative exponent in the denominator, and it's confusing using `i`

as a counting variable.

Thanks in advance.

**Context**

There is none. This was sent to me by a friend, off of a "what is this" site. No known artist, location, date, etc.

**Edit #1 - Additional Posting**

Also posted in Physics, maybe something going on over there will spark a thought. Not much more (or any) insight beyond what's in this thread though.

**Edit #2 - Re-done Equation with "knowns"**

Based on some comments, and things not previously seen/added to original transcribed equation, I've got the following:

The changes aren't substantial. The coefficient for the `r'`

in the denominator has been proposed as being `n`

, or `2`

. Additionally, having stared at this a bit longer, the two `2`

exponents could also be sloppily-written thetas. Probably not.

All-in-all, it seems that this is most likely trolling.