[julia-users] How to produce the ≉ symbol?

[Jutho]

(on Mac): what seems to work is to first use \approx + tab to get ≈, and then 
go back one character and type \not + tab. If you first use \not + tab, and 
then start typing \approx, the not acts only on the \ . If you write 
\not\approx + tab, the \not is not being substituted.