测试mermaid和mathjax插件

数学公式

流程图

graph TD;
    A-->B;
    A-->C;
    B-->D;
    C-->D;

gantt
dateFormat  YYYY-MM-DD
title Test GANTT diagram

section A section
Completed work  :done,    des1, 2014-01-06,2014-01-08
Active work     :active,  des2, 2014-01-09, 3d
Future work     :         des3, after des2, 5d

sequenceDiagram
    participant Alice
    participant John
    Alice->>John: Hello John, how are you?
    John->>Alice: Fine, thanks, and you?
    Alice->>John: I'm fine, too.