How can I type the “isomorphic”,”not equal” and “the set of integers , rationals and reals” symbol ?
What is the code ?
= means equal, how to write “not equal”
What about real numbers, rationals, natural numbers and integers?
Alek RichterEnlightened
$\cong$ for ≅
$\ne$ for ≠
$\mathbb{R}$, $\mathbb{Q}$, and $\mathbb{Z}$ for R
, Q, and Z
, respectfully.
See here to learn how to do it all.