- #1
Bachelier
- 375
- 0
I searched for this but couldn't find a sol.
when entering the code for sets i.e.
I get this error message:
when entering the code for sets i.e.
Code:
\mathbb{N}I get this error message:
! Undefined control sequence. <recently read> \mathbb
l.32 $\mathbb{N}$
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.
l.32 $\mathbb{N}$
The control sequence at the end of the top line
of your error message was never \def'ed. If you have
misspelled it (e.g., `\hobx'), type `I' and the correct
spelling (e.g., `I\hbox'). Otherwise just continue,
and I'll forget about whatever was undefined.