On 10 Jun 2014, at 14:29, Philippe Verdy <[email protected]> wrote: > ℕ ⊃ℤ ⊃ℚ ⊃ℝ ⊃ℂ are without doubt more useful and more common in double-struck > styles than in Fraktur styles.
Fraktur would normally be for Lie algebras. For sets, some other style or none. And logicians use their own notation. _______________________________________________ Unicode mailing list [email protected] http://unicode.org/mailman/listinfo/unicode
