Is there any way to change the horizontal spacing between the characters of an equation environment and also be versatile enough so as to be able to set different spacing for different equations?
The recommended post does not cover my question, since it is aboout how to enter individual spaces between characters. My question is whether exists a method to automatically insert the desired space between each one of the characters of an equation. To be more specific, is there, for example, a way to transform the expression
\[a+b=c\] to the expression
\[a\,+\,b\,=\,c\], without entering each one of the
\,'s by hand between the characters of the initial expression.