Quote:
Originally Posted by I-Think  where do you get the vertical slashes? |
It depends on the keyboard you're using... To get "|" I type Alt + Shift + l. (the last symbol is the letter L)
If there is no key on your keyboard with the symbol "|" you can use \vert and \Vert :
- \vert x-2 \vert gives
- \Vert e_k \Vert gives
