Typst to UTF-8 is a bodge to write simple UTF-8 math using Typst. Use the snippet tab for small math expressions and the text tab for text containing math in $...$ or $$...$$.

Mangled Typst	UTF-8 approximation
nabla f(x) = 2 x	∇𝑓(𝑥) = 2𝑥
v = diff x/diff t	𝑣 = 𝜕𝑥/𝜕𝑡
EE[(x-mu)^2] = sigma^2	𝔼[(𝑥−𝜇)²] = 𝜎²
lim {x -> oo} 1/x = 0	lim {x → ∞} 1/x = 0
Delta_t <= (1 - kappa)^t Delta_0	𝛥ₜ ≤ (1 − 𝜅)ᵗ𝛥₀
Phi = integral bold(E) dot d bold(A)	𝛷 = ∫ 𝐄 ⋅ d𝐀
diff^2 u/diff x^2 + diff^2 u/diff y^2 = 0	𝜕²𝑢/𝜕𝑥² + 𝜕²𝑢/𝜕𝑦² = 0
cal(N)(x; mu, sigma^2) = exp(-(x - mu)^2/sigma^2)/sqrt(2 pi sigma)	𝒩(𝑥; 𝜇, 𝜎²) = exp(−(𝑥 − 𝜇)²/𝜎²)/√̅2̅𝜋𝜎

This is a quick and dirty replacement of known commands to matching UTF-8 symbols. Commands that "do something" rather than produce a symbol, like mat(), do not work.

Props to Günter Milde for the Unicode ⟷ Typst mapping.