Added latex-math-cheatsheet

latex-math-cheatsheet.md

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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` |$\sup$    |