I want to see if I can write equations in discourse.

For example:

a=b^2

$$\sum_{i=1}^n a_i = S_n$$

It should work now.

```
$y = x^2$
$\left\langle a \right\rangle = a[n - 1:0]$
$ (A + B) = (A \wedge B) = (A \mathrm{~OR~} B)$
```

renders as

y = x^2

\left\langle a \right\rangle = a[n - 1:0]

(A + B) = (A \wedge B) = (A \mathrm{~OR~} B)

```
$$
y = x^2\\
\left\langle a \right\rangle = a[n - 1:0]
$$
```

renders as

y = x^2\\
\left\langle a \right\rangle = a[n - 1:0]

trying:

\sum_{i=1}^n x_i = S_n

$$\sum_{i=1}^n x_i = S_n$$

Double dollar signs work only if the expression and the `$$`

are on different lines. For inline you need to you single `$`

.