If you zoom in, it's clearly a "periodic table of math". You see this sort of thing sometimes, where someone will make a chart composed of prominent objects, categories, or concepts in a field, arranged to look like the periodic table of chemical elements. Like the "periodic table of beer styles" or "periodic table of musical genres", typically with abbreviations similar to chemical symbols.

This one has elements like "Decimal Point", "Numerator", "Cosine Rule", "Rotation", etc.

[–] eran_morad@lemmy.world 2 points 8 months ago* (last edited 8 months ago) (1 children)

I know. But this makes no sense, as the periodic table is, well, periodic. Elements in the same column have similar properties, at least until you get to heavier atoms. This concept doesn’t exist in math. Unless you consider isomorphism, which is well beyond the intent of this thing’s creator and too uncommon a phenomenon to merit a table (and there’s no counterpart to atomic mass in this tortured mathematical analogy- there is no periodicity).

[–] agamemnonymous@sh.itjust.works 2 points 8 months ago

It does at least appear to group related topics. I dunno what to tell you, it looks like an elementary school classroom, I'm not sure they put that much thought into it.