Preventing Square Brackets from Italicizing in Mathematical Expressions

[Stephen Tashi]

What's the simplest way to prevent an array index "i" inside square brackets in a mathematical expression from being interpreted as code to italicize text by the forum editor?

My work around is to put a space before the "i" in Latex expressions, but this is slightly inconvenient.

For example $A[\ i][j] = \beta$ displays properly.

and [itex] A[j] = \beta [/itex] doesn't.

 

[mfb]

[plain][i][/plain]
[i[b][/b]]
[^{}i]

Choose your favorite one. They all work:
$[i] [i] [^{}i]$

 

[Greg Bernhardt]

The is an unfortunate problem with MathJax and XF BBcode not communicating with each other.

 

[DrGreg]

[plain][i][/plain]
[i[b][/b]]
[^{}i]

Choose your favorite one. They all work.

Also \left[ i \right].

$$\left[ i \right].$$

 

[mfb]

Everything that breaks the string [i] in the source code.
I just noted it is as easy as adding spaces (not LaTeX spaces): [ i ] becomes $[ i ]$