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+# Material Extra
+## Material que pode ser util ao longo do curso
+---
+#### Lista de ferramentas:
+1.  [Latex CheatSheet](https://github.com/TiagoRG/uaveiro-leci/blob/master/tools/latex-cheatsheet)   ·   PDF Download (Não disponível)
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diff --git a/tools/latex-cheatsheet/README.md b/tools/latex-cheatsheet/README.md
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+# LaTeX CheatSheet
+### -- Under Development --
+---
+## Índice
+|ID                    |Tópico                                   |
+|---------------------:|-----------------------------------------|
+|Comandos de estrutura |[estrutura.md](https://github.com/TiagoRG/uaveiro-leci/blob/master/tools/latex-cheatsheet/estrutura.md)|
+|Expressões matemáticas|[math.md](https://github.com/TiagoRG/uaveiro-leci/blob/master/tools/latex-cheatsheet/math.md)
+#### Todos os comandos são introduzidos no ficheiro latex usando o caracter \\ atrás do comando.
+#### { }  representam argumentos obrigatórios
+#### [ ]  representam argumentos facultativos
+ 
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+## Compilação em terminal
+|Comando|Função|
+|-|-|
+|pdflatex {ficheiro.tex}|Compila o ficheiro .tex e converte para pdf.|
+|bibtex {ficheiro}|Compila o determinado ficheiro de biblioteca, para o ficheiro .tex o reconhecer terá de usar `pdflatex {ficheiro.tex}` após.|
+
+ 
+
+---
+## Comandos de estrutura
+|Comando|Função/Uso|
+|-|-|
+|`documentclass[options]{class}`|Comando responsável por definir a estrutura do documento.<br>As 5 classes de codumento são:<br>· article<br>· report<br>· book<br>· slides<br>· letter<br>Dentro das opções está o tamanho da folha (a4paper, etc.), tamanho da letra (11pt, 12pt, ect.), número de colunas (onecolumn, twocolumn), etc.|
+|`begin{document}`<br>...<br>`end{document}`|Usado para indicar o início e o fim do documento.|
+|`begin{thebibliography}`<br>...<br>`end{thebibliography}`|Usado para indicar o início e o fim de uma bibliografia. Usado num ficheiro `.bib`.
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+Disclaimer
+============================
+### The credits for this sheet goes to [LKS90](https://gist.github.com/LKS90). I just made a few changes!
+##### [Original](https://gist.github.com/LKS90/252ac41bd4a173be35b0)
+---
+Example expressions / functions
+============================
+
+Input             | Rendered        |
+-----------------:|----------------:|
+`$a = b + c − d$` | $a = b + c − d$ |
+`$\sqrt{?\frac{\pi}{2}}$` | $\sqrt{\frac{\pi}{2}}$ |
+`$y = a x_1^2 + b x_2 + c$` | $y = a x_1^2 + b x_2 + c$ |
+
+Special characters / Symbols
+============================
+### Latin:
+##### No dot:  
+`\imath` $\rightarrow$ $\imath$,
+`\jmath` $\rightarrow$ $\jmath$
+
+##### Hat:  
+`\hat{\imath}`  $\rightarrow$ $\hat{\imath}$,
+`\hat{\jmath}`  $\rightarrow$ $\hat{\jmath}$
+
+### Greek Letters:
+##### Capital:
+LaTex      |   | LaTex    |   |
+----------:|--:|---------:|--:|
+`\Gamma`   | Γ | `\Delta` | ∆ |
+`\Lambda`  | Λ | `\Phi`   | Φ |
+`\Pi`      | Π | `\Psi`   | Ψ |
+`\Sigma`   | Σ | `\Theta` | Θ |
+`\Upsilon` | Υ | `\Xi`    | Ξ |
+`\Omega`   | Ω |          |   |
+
+##### Lowercase:
+LaTex      |   | LaTex     |   |
+----------:|--:|----------:|--:|
+`\alpha`   | α | `\nu`     | ν |
+`\beta`    | β | `\kappa`  | κ |
+`\gamma`   | γ | `\lambda` | λ |
+`\delta`   | δ |  `\mu`    | µ |    
+`\epsilon` | ϵ | `\zeta`   | ζ |
+`\eta`     | η | `\theta`  | θ |
+`\iota`    | ι | `\xi`     | ξ |
+`\pi`      | π | `\rho`    | ρ |
+`\sigma`   | σ | `\tau`    | τ |
+`\upsilon` | υ | `\phi`    | φ |
+`\chi`     | χ | `\psi`    | ψ |
+`\omega`   | ω |           |   |
+
+##### Other:
+LaTex       |   | LaTex       |   |
+-----------:|---|------------:|--:|
+`\digamma`  | ϝ | `varepsilon`| ε       |
+`\varkappa` | ϰ | `\varphi`   | ϕ       |
+`\varpi`    | ϖ | `\varrho`   | ϱ       |
+`\varsigma` | ς | `\vartheta` | ϑ       |
+`\eth`      | ð | `\hbar`     | $\hbar$ |
+
+
+### Other:
+#### Other Symbols
+LaTex         |   | LaTex            |   |
+-------------:|---|-----------------:|--:|
+`\partial`    | ∂ | `\infty`         | ∞ |
+`\wedge`      | ∧ | `\vee`           | ∨ |
+`\neg` `\not` | ¬ |                  |   |
+`\bot`        | ⊥ | `\top`           | ⊤ |
+`\nabla`      | ∇ | `\varnothing`    | ∅ |
+`\angle`      | ∠ | `\measuredangle` | ∡ |
+`\surd`       | √ | `\forall`        | ∀ |
+`\exists`     | ∃ | `\nexists`       | ∄ |
+
+#### Relational Symbols
+LaTex             |   | LaTex              |          |
+-----------------:|---|-------------------:|---------:|
+`\hookrightarrow` | ↪      | `\Rightarrow`     | ⇒         |
+`\rightarrow`     | →      | `\Leftrightarrow` | ⇔         |
+`\nrightarrow`    | ↛      | `\mapsto`         | $\mapsto$ |
+`\geq`            | ≥      | `\leq`            | ≤         |
+`\equiv`          | ≡      | `\sim`            | ∼         |
+`\gg`             | ≫      | `\ll`            | ≪          |
+`\subset`          | ⊂     | `\subseteq`     | ⊆           |
+`\in`             | ∈      | `\notin`         | ∉          |
+`\mid`            | $\mid$ | `\propto`        | ∝          |
+`\perp`            | ⊥     | ` \parallel`     | ∥          |
+`\vartriangle`     | $\vartriangle$
+
+#### Binary operators
+LaTex        |   | LaTex  |   |
+------------:|---|-------:|--:|
+`\wedge`     | ∧ | `\vee` | ∨ |
+`\neg``\not` | ¬ |        |   |
+
+#### Cumulative operators
+LaTex     |           | LaTex       |             |
+---------:|-----------|------------:|------------:|
+`\int`    | ∫         | `\iint`     | $\iint$     |
+`\iiint`  | $\iiint$  | `\idotsint` | $\idotsint$ |
+`\prod`   | $\prod$   | `\sum`      | $\sum$      |
+`\bigcup` | $\bigcup$ | `\bigcap`   | $\bigcap$   |
+
+#### Named operators
+|LaTex||LaTex||
+|--------:|---------|---------:|----------|
+|`\arccos`|$\arccos$|`\injlim` |$\injlim$ |
+|`\arcsin`|$\arcsin$|`\lg`     |$\lg$     |
+|`\arctan`|$\arctan$|`\lim`    |$\lim$    |
+|`\arg`   |$\arg$   |`\liminf` |$\liminf$ |
+|`\cos`   |$\cos$   |`\limsup` |$\limsup$ |
+|`\cosh`  |$\cosh$  |`\ln`     |$\ln$     |
+|`\cot`   |$\cot$   |`\log`    |$\log$    |
+|`\coth`  |$\coth$  |`\max`    |$\max$    |
+|`\deg`   |$\deg$   |`\min`    |$\min$    |
+|`\det`   |$\det$   |`\Pr`     |$\Pr$     |
+|`\dim`   |$\dim$   |`\projlim`|$\projlim$|
+|`\exp`   |$\exp$   |`\sec`    |$\sec$    |
+|`\gcd`   |$\gcd$   |`\sin`    |$\sin$    |
+|`\hom`   |$\hom$   |`\sinh`   |$\sinh$   |
+|`\inf`   |$\inf$   |`\sup`    |$\sup$    |
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