I don't know anything about Standard Notes. I see that it can be used as for blogging, so I'm going to give it a try.

Experimentation shows that I can type in markdown directly:

*hi*

becomes

hi


print("hello world")
if (5 == 3+2) {
print("equal")
}


becomes

print("hello world")
if (5 == 3+2) {
print("equal")
}


Unfortunately there does not seem to be any easy way to add math support through MathJax or anything else. Edit: This is not correct. Just by chance, based on what I was trying to write above, I discovered that you can add the MathJax CDN at the top of the page and enclose your math inside tags like this:

<p>$$y_{t} = \varepsilon_{t}$$</p>

and it's rendered as

$$y_{t} = \varepsilon_{t}$$

Don't ask me why that works, but it's pretty cool!

For inline: \$$y_{t}\$$ works: $$y_{t}$$.

Sometimes a double dollar sign works. It does if I put it on its own line:

$$y_{t}$$

Further edit: I don't know what's going on, but now that I'm at the bottom of the page, I can use MathJax in the usual way. I must have done something strange above.

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