Undefined control sequence \ket

[draftman9]

Problem summary

Undefined control sequence \ket

Expected

Render the \ket correctly.

Environment Information

• OS: Microsoft Windows [版本 10.0.17763.4252]
• Vim / Neovim version: VIM - Vi IMproved 8.2 (2019 Dec 12, compiled May 2 2021 19:00:02)
• Browser: Version 105.0.5195.113 (Official Build) (64-bit)

Steps to reproduce the issue (required)

md file:

$$
\ket{k}
$$ 

1. open the md file
2. open the vim-instant-markdown
3. then display

correct rendering is blow:

[ashwinvis]

I think this would require instant-markdown/instant-markdown-d#84

[draftman9]

I think this would require instant-markdown/instant-markdown-d#84

I do not understand the contents from your given issue web. I would directly ask: Can I solve the rendering problem by installing a new mathjax? Or there is no any methods to solve this problem?

[ashwinvis]

You can try out

instant-markdown/instant-markdown-d#104