奇怪的 Markdown / LaTeX 笔记

记一下日常见到的一些奇怪的 Markdown / LaTeX 用法...

Markdown

LaTeX

LaTeX 数学

1. 运算符

1.1 造运算符:

a \operatorname{sin} c | \(a \operatorname {sin} c\)

2. 特殊符号

2.1 点

语义的点:

\dotsc for “dots with commas” | \(a \dotsc b\)
\dotsb for “dots with binary operators/relations” | \(a \dotsb b\)
\dotsm for “multiplication dots” | \(a \dotsm b\)
\dotsi for “dots with integrals” | \(a \dotsi b\)
\dotso for “other dots” (none of the above) | \(a \dotso b\)
\dots output the most suitable form based on the immediate context
- a \dots b | \(a \dots b\)
- a + \dots + b | \(a + \dots + b\)
- \int_{a_1}\int_{a_2} \dots \int_{a_n} | \(\int_{a_1}\int_{a_2} \dots \int_{a_n}\)

位置的点:

\cdots | \(a \cdots b\)
\vdots | \(a \vdots b\)
\ddots | \(a \ddots b\)
\ldots | \(a \ldots b\)

For example:

M

=\begin{bmatrix}

A  &  B  & \cdots\ &C\\

D  &  E  & \cdots\ & F\\

 \vdots   & \vdots & \ddots  & \vdots  \\

 G & H  & \cdots\ & I\\

\end{bmatrix}

\[M
=\begin{bmatrix}
A & B & \cdots\ &C\\
D & E & \cdots\ & F\\
\vdots & \vdots & \ddots & \vdots \\
G & H & \cdots\ & I\\
\end{bmatrix}
\]

2.2 分数/二项式系数

\(\TeX\) style:

{a \over b} | \({a \over b}\)
{a \atop b} | \({a \atop b}\)
{a \choose b} | \({a \choose b}\)
{a \brack b} | \({a \brack b}\)
{a \brace b} | \({a \brace b}\)
generate:
- {a \above dimension(nullable) b}
  - dimension: xpt; 0.4pt as default; 0pt hide
  - {a \above 0.5pt b} | \({a \above 0.5pt b}\)
  - {a \above {} b} | \({a \above {} b}\) (error in mathjax...)

\(\LaTeX\) style:

\frac ab | \(\frac ab\)
\binom ab | \(\binom ab\)
generate:
- {\genfrac leftdelimiter rightdelimiter dimension style numerator denominator}
- leftdelimiter, rightdelimiter, dimension, style, numerator, denominator are all nullable, you could use {} instead
  - style (nullable):
    - 0 denotes \displaystyle
    - 1 denotes \textstyle
    - 2 denotes \scriptstyle
    - 3 denotes \scriptscriptstyle
  - \genfrac(]{0pt}{2}{a+b}{c+d} | \(\genfrac(]{0pt}{2}{a+b}{c+d}\)
  - \genfrac{}{}{0pt}{}{a+b}{c+d} | \(\genfrac{}{}{0pt}{}{a+b}{c+d}\)
other:
- \dfrac: fraction in the display style | \(\dfrac ab\)
- \tfrac: fraction in the text style | \(\tfrac ab\)

巴特西