Escaped Operators and Characters

Escaped Operators and Characters

things like \pi yield $\pi$ they have no braces { } or brackets [ ] and instead are just themselves. This means they can be inserted into other commands and the only limitation might be a space after the escaped sequence so that it doesnt turn into something like \pix when you wanted $\pi x$

Equations are like sentences

These sequences all together read like a sentence with symbols and syntax determining positioning and what is rendered in a logical format

$$\sum_{j=0}^7j^2$$

$\sum_{j=5}^7j^2$

Reads like "$\sum$, then below it add $J=5$, raise that whole combo to the power of $7$ then adjacent to that place $J^2$.