this post was submitted on 13 Dec 2025
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Science Memes

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[–] FiskFisk33@startrek.website 72 points 3 days ago* (last edited 3 days ago) (3 children)

What they actually see:

convolution
cross product
dot product
multiplication

[–] taiyang@lemmy.world 27 points 3 days ago

The irony is that this meme works in reverse for that. At least, in order of mind blowing as I refreshed my memory, it goes multiplication (very easy), dot (scalars easy), cross (vectors medium) and convolution (integrals hard).

In fact, I never did the later two but convolution looks fun.

[–] betanumerus@lemmy.ca 4 points 3 days ago* (last edited 3 days ago) (1 children)

No. If a is a scalar, which it clearly is, it's all multiplication. And there is no reason to use any of the first three. We say "three apples", not "three x apples".

[–] FiskFisk33@startrek.website 3 points 2 days ago* (last edited 2 days ago)

hurr durr maybe it's a vector in ℝ

[–] Ziglin@lemmy.world 7 points 3 days ago (1 children)

I see multiplication in code, Cartesian product, multiplication, multiplication.

I might not count as a mathematician though. If the * was supposed to be convolution the a should have been cursive.

[–] driving_crooner@lemmy.eco.br 3 points 3 days ago (1 children)

In latex if you are using * you better mean convolution

[–] Ziglin@lemmy.world 1 points 2 days ago

Yes (actually \ast though?), but unless you're a maniac in LaTeX latin letters referring to variables in a math environment are cursive (actually a math font I think). Therefore if I am reading a single sentence that may or may not have been made using TeX I tend towards not if variables are in a standard font.

[–] FuglyDuck@lemmy.world 21 points 3 days ago (2 children)

it's funny, because I always imagined them giggling about typing 8008135 into calculators.

[–] jbrains@sh.itjust.works 27 points 3 days ago (1 children)
[–] FuglyDuck@lemmy.world 6 points 3 days ago (1 children)

Naw. Mathmaticians are frequently dyslexic.

It’s grammarians doing it backward!

[–] mercano@lemmy.world 6 points 3 days ago

Ah, that’s how we wound up with reverse Polish notation.

3 a *

Excuse me, but self respecting mathematicians calculate it properly.

Now let's see, it was Dolly Parton had...

[–] someacnt@sh.itjust.works 10 points 3 days ago (1 children)
[–] sundray@lemmus.org 10 points 3 days ago

Math articles on Wikipedia really need a prerequisite section.

[–] driving_crooner@lemmy.eco.br 11 points 3 days ago
[–] akilou@sh.itjust.works 10 points 3 days ago
[–] hperrin@lemmy.ca 9 points 3 days ago (2 children)
[–] angrystego@lemmy.world 6 points 3 days ago

Shaka, when the walls fell.

[–] Kraiden@piefed.social 8 points 3 days ago (3 children)

madness. How am I supposed to know if 36 = 36 or 36 = 8?

[–] lvxferre@mander.xyz 7 points 3 days ago* (last edited 3 days ago) (1 children)

Numbers are all made up stuff, and they're all the same. Here, lemme prove it; let a=b, and...

a² = ab             // multiplying both sides by "a"
2a² = a²+ab         // adding a² to both sides
2a²-2ab = a²-ab     // subtracting 2ab from both sides
2(a²-ab) = 1(a²-ab) // isolating (a²-ab)
2 = 1               // dividing both sides by (a²-ab)

From there you can prove any number is any number. 36=36 or 36=8 or 36=π.

the trickIf a=b, you can't divide both sides by (a²-ab), because it's a division by zero.

[–] psud@aussie.zone 2 points 3 hours ago (1 children)

Lots of zeros in that due to a=b (before looking at the spoiler text)

[–] lvxferre@mander.xyz 1 points 2 hours ago

Bingo. The whole "a=b" is just a distraction to hide it, otherwise as soon as you hit the third step you cancel both out, and end with 0=0.

[–] Ephera@lemmy.ml 4 points 3 days ago (1 children)

Do you mean 36 = 18 there? Otherwise, I'm very confused. 😅

[–] mhi@lemmy.world 19 points 3 days ago

Doesn't make a difference as 18 = 8

[–] DacoTaco@lemmy.world 3 points 3 days ago

Because the things like 3a are only for variables, not numbers.

[–] Jerkface@piefed.social 7 points 3 days ago

0a^0^ + 3a^1^

[–] HeyThisIsntTheYMCA@lemmy.world 6 points 3 days ago (1 children)
[–] dreadbeef@lemmy.dbzer0.com 13 points 3 days ago (1 children)

i just want to know how to write it as screaming

[–] IEatDaFeesh@lemmy.world 5 points 3 days ago

Chess Grandmasters: a3

[–] psx_crab@lemmy.zip 5 points 3 days ago

b

Because 3a = b

[–] TheTechnician27@lemmy.world 3 points 3 days ago* (last edited 3 days ago) (1 children)

FYI for the alt text: that's Vince McMahon.

[–] Ephera@lemmy.ml 3 points 3 days ago

Yeah, when I found the meme template, it did say that, too, but I wasn't sure if that information is actually helpful to someone reading alt text. Personally, I only know the guy from the memes. 😅

[–] jbrains@sh.itjust.works 2 points 3 days ago