Nicolas X

### qBittorrent & operating system versions qBittorrent: 4.6.0.10 (64-bit) Operating system: Windows 11 家庭中文版 Qt: 5.15.11 libtorrent-rasterbar: 1.2.19 ### What is the problem? 如图，我的全局上传速度限制为500k，但是有个文件的上传速度特别高，已经占用了我所有的上传带宽  ### Steps to reproduce _No...

I got an error: `Undefined control sequence \bra`, Here's my formula code： ``` \[\bra{E,\alpha}W_{q}\ket{E,\beta} =\bra{E,\alpha}U_{g_{1}}^{\dagger}W_{q}U_{g_{1}}\ket{E,\beta}=e^{i( \beta-\alpha)}\bra{E,\alpha}W_{q}\ket{E,\beta},\] \[\Rightarrow\quad\bra{E,\alpha}W_{q}\ket{E,\beta} =0. \tag{3.8}\] ``` When I use MathJax, it renders normally：  I added...