Reply To: Symbol for “is a normal subgroup of”
A late suggestion came in on this question.
Section 107 covers this situation. Just use a shape symbol followed unspaced by 2 letters.
So your symbol could be [braille]$ns for "normal subgroup" which is a shorter term than modifying a triangle. Your tn (or special symbols page) would still have to describe the print sign (left-pointing equilateral triangle) when defining the symbol's meaning.