how to code a variable subscripted with another subscripted variable

Question

My first day with Tex and my first stumble ...

How do I code x subscripted with i subscripted with n? x_i_n gets rejected:

 ! Double subscript

That is exactly what I am trying to say ;-) A ref to a good tutorial that would answer this kind of questions would be much appreciated. I saw a dozen but all do not go beyond general article structure and a few examples.

note that the official latex syntax always uses braces to avoid such ambiguity, while x_i does work you will not see such syntax in the latex book, only x_{i} then it is clearer that the syntax you need is x_{i_{n}} — David Carlisle, Jul 23 '19 at 11:46

score 0 · Answer 1 · edited Jul 23 '19 at 15:55

0

As noted in other comments, the solution is

x_{i_{n}}

A good introduction which may fit your interests is The Not So Short Introduction to LaTeX by Tobias Oetiker.

edited Jul 23 '19 at 15:55

moewe

175,683

answered Jul 23 '19 at 15:27

Theova

105

how to code a variable subscripted with another subscripted variable

1 Answers1