# Command for strict inclusion does not render [duplicate]

Possible Duplicate:
Please enable AMSsymbols extension for MathJax

I typed the command \subsetneq in an answer a few moments ago and it didn't render : the output just reproduced the command in red. I also tried \subsetneqq, \varsubsetneq and \varsubsetneqq, but to no avail. Finally I resorted to the clumsy parenthetical remark "strict inclusion". Could some maven please explain what I should do? (I apologize if this question has already been asked.)

• This is almost surely a sub-case of meta.math.stackexchange.com/questions/1147/… Nov 15 '10 at 20:31
• @Willie: I would have assumed as much, but MathJax apparently just doesn't support the subsetneq symbol at all. The only workaround would be to use the Unicode symbol directly. Testing: $A ⊊ B$ (copy-pasted from here)
– user856
Nov 16 '10 at 1:14
• Scratch that, it works on MathOverflow. I suppose MathJax's documentation is incomplete.
– user856
Nov 16 '10 at 1:18
• This is not an exact duplicate. Nov 16 '10 at 13:27