LaTeX cheat sheet

a_b: \(a_b\)

\mathbf{R}: \(\mathbf{R}\)

\mathbb{R}: \(\mathbb{R}\)

\frac{a}{b}: \(\frac{a}{b}\)

\{x\}: \(\{x\}\)

\cdot: \(\cdot\)

\in: \(\in\)

\subset: \(\subset\)

\subseteq: \(\subseteq\)

\cap: \(\cap\)

\cup: \(\cup\)

\emptyset: \(\emptyset\)

\begin{enumerate}: Creates a numerated list

\exists: \(\exists\)

\forall: \(\forall\)

\therefore: \(\therefore\)

\x_{a}^{b}: \(x_{a}^{b}\)

\text{Hello World}: \(\text{Hello World}\)

\implies: \(\implies\)

\land: \(\land\)

\lor: \(\lor\)

\neg: \(\neg\)

\caption[''short'']{''long''}: Adds captions to a figure

\begin{figure}[h]: Starts a figure

\circ: \(\circ\) \Sigma: \(\Sigma\)

\overline{ab}: \(\overline{ab}\)

\infty: \(\infty\)

\sqrt[x]{}: \(\sqrt[x]{}\)

\displaystyle: Make math expressions large

\approx: \(\approx\)

n \choose x: \(n \choose x\)

Inserting an image:

\documentclass{article}
\usepackage{graphicx}
\graphicspath{ {./images/} }

\begin{document}
The universe is immense and it seems to be homogeneous, 
in a large scale, everywhere we look at.

\includegraphics{universe}

There's a picture of a galaxy above
\end{document}

/times: \(/times\)

/label{} / /ref{}: To label, then reference that label's value