Bonus: Nice subscripts and superscripts

The SimpleTropical module prints polynomials in an appealing style.

For example, the polynomial $-2 \oplus (3\otimes x) \oplus (4 \otimes x^2)$ is rendered as -2⊗x⁰ ⊕ 3⊗x¹ ⊕ 4⊗x². The function int2sup is used to convert an Integer into a String of superscipts.

The function int2sup is not exported by can be accessed using SimpleTropical.int2sup. For example:

julia> "x" * SimpleTropical.int2sup(-1) * "y" * SimpleTropical.int2sup(3)
"x⁻¹y³"

We also provide the companion int2sub for subscripts:

julia> "a" * SimpleTropical.int2sub(3)
"a₃"

Unfortunately, there is no good way to decorate a letter with aligned super and subscript. For example, the best way to render $z_5^2$ would be like this:

julia> "(z" * SimpleTropical.int2sub(5) * ")" * SimpleTropical.int2sup(2)
"(z₅)²"

The functions int2sub and int2sup are defined in src/scripter.jl. That file can be copied and used as desired.