I do think this is solvable. E.g. if you write latex markup, there is a line-based counterpart to the formulas in the compiled pdf. If the relation between markup and formula is isomorphic, navigating with arrow keys in the formula is possible, because it is in the markup.
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A very good point!
I do think this is solvable. E.g. if you write latex markup, there is a line-based counterpart to the formulas in the compiled pdf. If the relation between markup and formula is isomorphic, navigating with arrow keys in the formula is possible, because it is in the markup.