7

Unicode provides subscripts and superscripts, so I can do this:

And this:

x₅

However, combining these two I get:

x²₅ or x₅²

Which looks badly.

Any chance to get the superscript directly on top of the subscript in Unicode?

For clarity, this is what I'd like to achieve:

enter image description here

8
  • 1
    No. You need to use a math formatting program.
    – DavidPostill
    Dec 25 '18 at 13:42
  • @DavidPostill Too bad :(
    – gaazkam
    Dec 25 '18 at 13:45
  • Out of interest what are you using the notation to mean? "x²₅ or x₅²" would ordinarily mean different things. Other than chemical elements I can't readily recall seeing that notation?
    – pbhj
    Dec 25 '18 at 16:28
  • @pbhj It occurs often wherever people have reason to make up such a notation. For example the superscript if put in parenthesis could be the nth derivation and the subscript the mth part of a vector. Or whatever.
    – Nobody
    Dec 25 '18 at 19:07
  • @pbhj My particular use case: x is a vector of unknowns in a system of linear equations. So we have: a_1*x_1^5+b_1*x_1^4+...etc, etc
    – gaazkam
    Dec 25 '18 at 22:36
12

Your issue is not with Unicode but with the font you use. Technically, every font could use negative kerning to move subsequent super- and subscripts on top of each other. One font that does this is Linux Libertine (if you put the subscript first):

your example rendered with Linux Libertine

On the other hand, this is quite rare. Even STIX, which is specifically designed with mathematical typesetting in mind, does not have this feature.

3
  • 4
    Does it also work for x₅₅²²? Dec 25 '18 at 20:35
  • 1
    While I believe there are fonts which do this, it doesn’t seem like correct behavior. The superscript and subscript characters are neither combining characters nor modifier characters, as far as I know.
    – VGR
    Dec 25 '18 at 21:38
  • @VGR: Well, from some point of view, you are not combining with or modifying another character this way. You just use space more efficiently.
    – Wrzlprmft
    Dec 26 '18 at 9:52

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