[NTG-context] basic issues with formulas

[Hans Åberg]

> On 3 Dec 2020, at 20:48, Pablo Rodriguez <oinos at gmx.es> wrote:
> 
> math is all Greek to me and I’m experiencing issues when typesetting the
> most basic inline formulas.
…
> The issues I’m experiencing are:
> 
> 1. Kernings around ligatures (fi) are wrong.
> 
> 2. Is there a way to enable ligatures?
> 
> 3. Packed works fine with fractions, but packed columns is wrong with
> them. It adds too much space.
> 
> Again, formulas are totally foreign to my work with ConTeXt.

When you do not use \text in math mode, it means implicit multiplication, which has special spacing. Operator names use text kerning. For example $sin x$ is implicit multiplication, and $\sin x$ the function "sin" applied to the variable x.