this post was submitted on 13 Dec 2025
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What they actually see:
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.
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".
hurr durr maybe it's a vector in ℝ
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.
In latex if you are using * you better mean convolution
Yes (actually
\astthough?), 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.