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Or fancy letters, like the L in a Laplace transformation.
And if that’s not enough, you just straight up make up new symbols, like Nabla
Ah yes, because other science fields like linguistics would never just grab random letters and turn them upside down to repurpose them!
əəəə… What do you mean? /j
There exist a mirroded E
Any upsidedown A in the set of all real characters used in academia would immediately illicit mathematical memories.
Did you mean ALL the upside up A?
Nope, it means “for any” as in no matter which one you choose it will be correct.
https://en.m.wikipedia.org/wiki/Universal_quantification
I usually used it as “for all”, but its looks like “for any” is used too
Also a good way to start an essay
