@Background Pony #94BA
 
A scroll found in the personal effects of Sir Bedivere:
 
S _h =? W _i  
L (S _h) = W _i  
L (S _h + N _o + H _a) = W _i  
d/de M (e) = N (e)  
∫N (e) = M (e)  
f (W _i) = B _u  
B _u = (nW _i)  
B _u = (W _o)  
∴ W _o = W _i  
S _h =? W _o = W _i  
g (W _d) = B _r  
g (S _h) = B _r  
g (S _t) = B _r  
W _d ≠ S _t  
d (W _d) < d (W _t)  
d (S _h) < d (W _d) < d (W _t)  
d (x) < d (W _t)  
x = D _u  
If m (S _h) < m (D _u)  
Then S _h = W _d  
and ∴ S _h = W _i
 
Scribbled at the bottom:
 
Get larger scales!
 
NOTE: The authenticity of this document is a subject of heated debate due to the invention of calculus being centuries after Bedivere’s lifetime, as well as the logic behind the calculations being “too silly” for some (G. Chapman et al.)

@Scrounge 
Not really, I don’t really know how to do emoji from a desktop computer myself, but I personally do 90% of my derpibooru from my phone anyways…

@Ping_chan 
Ah. So my error here is looking at a normal desktop keyboard when I was asking, then?

@Scrounge 
🌞🍭🌈 I can type it just fine using my emoji enabled keyboard on my android smartphone.

This equation is a tag now. With the symbols.
 
Someone had to type it at least once, and I want to know how.

@thedarksideofthefandom  
This works in IRL, too.
 
Let X be the set containing the symbol for sunshine, Y be the set containing the symbol for lolipops, Z be the set containing the symbol for a rainbow (those symbols that are show in the picture), and let p be the set containing all multiples of 2.
 
Define, F:X x Y x Z -> P by x1 + y1 + z1 = p1 for all x1 ε X, y1 ε Y, z1 ε Z, and p1 ε P.
 
Since 2 is a multiple of 2, it follows that sunshine + lolipop + rainbow = 2. (since addition is commutative you can place the symbols in any order)
 
You can do the same thing for fish. Let S = {fish}.
 
Define, F:R x R -> S by x1 + x2 = s for all x1 ε R, x2 ε R, s ε S.
 
Hence, 2 + 2 = Fish.(Here, R is the set of all real numbers)
 
Not entirely sure if this is proper notation, but I believe this is how you can create addition functions.

@Background Pony #031F  
Current Headcanon, the CMC came into existence after someone did this equation.

i doubt that equation came form the same source as the formula of the powerpuff girls

@thedarksideofthefandom  
nah she’s just that awesome

If that’s how mathematics work in equestria, no wonders Rainbow Dash it’s able to broke our law of physics.

Also, your Blackboard Secret Reference for the episode:
 
https://www.youtube.com/watch?v=w5Fgp-KihIA

Equestrian matter to magic equation. Sunshine plus lollipops and rainbows equals friendship.

Look Around You: Equestrian edition.

Horse math.

facepalm
 
Sunshine, lollypops, and rainbows… wonderful.

?