My apologies if HN's formatter strips the special characters (edit: it didn't yay!): I wrote integral sign, subscript 0, superscript 1, math italic x, thin space, math italic d, math italic x. And maybe the idea is we should use words like "the integral from zero to one of x with respect to x." IDK.
That said unicode is not free from typesetting weirdness, see the character ο·½.
π«π«π«π«π«π«π«π«π«π«π«π«π«π«π«π«π«π«π«π«π«
2) Layout of mathematical formulas is reasonably complicated. It doesn't make sense to force that complexity to be included in every text layout engine.
It looks like this:
e=limβ¬(nββ)β‘(1+1/n)^n
f(x)=β_(k=-β)^βγc_n e^(β kx)γ
β«_(-β)^(+β)γexpβ‘(-a/2 x^2) β xγ=β(2Ο/a)
I find it quite readable, even for quite complicated formulae like the above. You can also replace the unicode symbols with Latex-style escape strings, like \sum or \below.
[1]: https://unicode.org/notes/tn28/UTN28-PlainTextMath-v3.1.pdf