Latex

Basic Symbols :

• \(\sim\) : \sim

• \(\circ\) : \circ

• \(\square\) : \square

• \(\equiv\) : \equiv

• \(\cong\) : \cong

• \(\unlhd\) : \unlhd

• \(\div\) : \div

• \(\nless\) : \nless

• \(\ngtr\) : ngtr

• \(\emptyset\) : \emptyset

• \(\subseteq\) : \subseteq

• \(a\choose b\) : a\choose b

• \(\underset{i\in I}U\) : \underset{i\in I}U

• \(\Leftrightarrow\) : \Leftrightarrow

• \(\langle\rangle\) : \langle\rangle

• \(\overrightarrow{\rm AB}\) : \overrightarrow{\rm AB}

• \(\underline{\text{Underline Text}}\) : \underline{\text{Underline Text}}

• \(\mathbb{R}\) : \mathbb{R}

  • bb : blackboard bold

• \(\mathcal{F}\) : \mathcal{F}

• \(\mathscr{F}\) : \mathscr{F}

Greek :

• \(\tau\) : \tau

• \(\rho\) : \rho

• \(\alpha\) : \alpha

• \(\beta\) : \beta

• \(\Gamma\) : \Gamma

• \(\epsilon\) : \epsilon

• \(\mathcal{E}\) : \mathcal{E}

• \(\varepsilon\) : \varepsilon

• \(\varphi\) : \varphi

Inline :

Limits above and below sums and integrals

• \(\sum\limits_{n}^{i}\int_0^1\) : \limits

Matrices and Matrix Equations

• \(\begin{smallmatrix} 1 & 0 \\ 0 & 1\end{smallmatrix}\) : \begin{smallmatrix} 1 & 0 \\ 0 & 1\end{smallmatrix}

  • \(I=[\begin{smallmatrix} 1 & 0 \\ 0 & 1\end{smallmatrix}]\)

  • \((\begin{smallmatrix} 1 & 1 \\ 1 & 0\end{smallmatrix})(\begin{smallmatrix} 1 & 1 \\ 0 & 1\end{smallmatrix})\ne(\begin{smallmatrix} 1 & 1 \\ 0 & 1\end{smallmatrix})(\begin{smallmatrix} 1 & 1 \\ 1 & 0\end{smallmatrix})\)

Multiple Lines :

Function

• \(F(x)=\begin{cases}1 & x\geq 0\\0 & \text{otherwise}\end{cases}\) : F(x)=\begin{cases} . . . \end{cases}

  • 1 & x \geq 0 \\

  • 0 & \text{otherwise}

Matrix

• \(F(x)=\begin{bmatrix}1\\2\\3\\4\\5\\6\\\end{bmatrix}\) : F(x)=\begin{bmatrix}1\\2\\3\\4\\5\\6\\\end{bmatrix}

Series of Equalities

• \(\begin{equation}\label{a}\begin{split}x &= a+b+c\\&=1+2+3\\&=6\end{split}\end{equation}\) : `\[\begin{equation}\{label}\begin{split}... \end{split}\end{equation}\]’

  • x &= a+b+c \\

  • &= 1+2+3

  • &= 6

Note: still haven’t figured out how to get multiple lines of equations to work in blogposts.

Potential Errors :

Spelling

• Ex: \overlien{AB} should be \overline{AB}

  • label , table

More than two backslashes

• Ex: Equation will work but \end{equation} will show at the end. One of the lines has more than two backslashes at the end of at least one of the lines.

Space before final $

• Ex: $\angle ABC $ should be $\angle ABC$

More $ on one side of equation than the other

• Ex: $A^2+B^2=C^2$$ should be $A^2+B^2=C^2$

Closing {}

• Ex: $\int\limits_{1}^{2$ should be $\int\limits_{1}^{2}$

Underset on the wrong side

• Ex: U\underset{i\in I} should be \underset{i\in I}U

Advice :

Detextify

• If you don’t know what a symbol is, draw it in Detextify here.

Google Docs Equations Boxes

• Most latex backslashes work in google doc’s equation boxes. If I have to do a “quick” homework, and dont want to spend a lot of time formatting a pdf in R, I will use google docs and latex in the equations boxes.

Note: This is how I began learning latex.

Why learn Latex?

When you type with latex instead of writting by hand:

• Generally speaking it looks nicer, especially on reports, projects, and presentations.

• Can spread any tension that is normally located in your dominate hand into both.

• It saves time in the long run updating a document on your computer than re-writing an entire problem by hand.