[Solved] Strange result using subscript GG

[Valdas]

Hello,

i want get letter "k" with subscript "GG". So i enter "k_GG", but i get strange formula: "k" with flipped "?" in subscript. So i must write "k_{G G}".
Is it a bug?

[Hagar Delest]

Why not k_"GG"?

Thanks to add '[Solved]' at beginning of your first post title (edit button) if your issue has been fixed.

[keme]

Hello,

i want get letter "k" with subscript "GG". So i enter "k_GG", but i get strange formula: "k" with flipped "?" in subscript. So i must write "k_{G G}".
Is it a bug?

GG is a binary operator in math (much greater than, displayed as ">>"), and if binary operators don't have an operand on either side, it's considered a syntax error. Syntax errors in Math are displayed as an inverted red question mark.

To ensure text is displayed verbatim (not interpreted as operators or named symbols), quote it.
Hence Hagar's solution.

[Valdas]

Thank for explanation!