Function cal

pub fn cal(body: Content) -> Content

Calligraphic font style in math.

Let $cal(P)$ be the set of ...

This corresponds both to LaTeX’s \mathcal and \mathscr as both of these styles share the same Unicode codepoints. Switching between the styles is thus only possible if supported by the font via font features.

For the default math font, the roundhand style is available through the ss01 feature. Therefore, you could define your own version of \mathscr like this:

#let scr(it) = text(
  features: ("ss01",),
  box($cal(it)$),
)

We establish $cal(P) != scr(P)$.

(The box is not conceptually necessary, but unfortunately currently needed due to limitations in Typst’s text style handling in math.)