eli5: What do you do when you run out of variables?

Question

you refer to variables like “x” “y” “z” so on so forth, but what happens when you run out? Do you go capital do you use a special symbol or something?

In: Mathematics

Answer 1

First of all, you can always use lowercase letters, uppercase letters, and quite commonly Greek letters.

But you can also use subscripts (e.g. a1, a2, a3…). For example, look at the [definition of polynomial](https://en.wikipedia.org/wiki/Polynomial#Definition).

You can also add a diacritical mark to the variables, like ã and ā. This usually denotes a variable that is related to or derived from an existing variable.