Infinity subscripts

[Peter Constable]

An infinity symbol might be used subscripted in math formulas, but math formulas regard higher-level markup in any case.

In general, Unicode assumes that super- / sub-scripting should be handled by markup and formatting unless there is a strong reason for separate encoding (e.g., as required in phonetic transcription, in which a plain-text distinction is needed).


Peter

-----Original Message-----
From: Unicode <unicode-bounces at corp.unicode.org> On Behalf Of Andrei Enache via Unicode
Sent: October 21, 2025 2:22 PM
To: unicode at corp.unicode.org
Subject: Infinity subscripts

Hi Unicode mailing list,

I'd like to know if Unicode is able to incorporate infinity subscripts into the specification? This would help with mathematical notation as it is very common there to mark some limiting behavior of a sequence.

Some internet discussion here: 

https://stackoverflow.com/questions/65495679/subscript-unicode-character-symbol-in-python
https://communities.sas.com/t5/SAS-Programming/How-to-create-a-subscript-of-the-infinity-symbol/td-p/738302
https://www.reddit.com/r/Unicode/comments/zgchk6/subscript_infinity_symbol/

Some programming languages like Mathematica (https://stackoverflow.com/questions/5481216/subscripted-variables) benefit from numbered and variable name (such as x, n) subscripts for other functionality, and infinity would help with this.

Many thanks,
Andrei