# Sandbox

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This is a "sandbox" page where you can practice editing. Feel free to scribble any nonsense you want. (The contents of this page may be deleted at any time.)

Please only scribble below this line, however.

## Scribble below

MediaWiki allows you to enter LaTeX equations using the [itex] tag. For example:

$\nabla \times \frac{1}{\varepsilon} \nabla \times \mathbf{H} = \frac{\omega^2}{c^2} \mathbf{H}$

You can put text in bold, italics, etcetera (see also the buttons at the top of the editing window). You can insert a link by using [[double brackets]] like MPB or [[double brackets|name]] like this.

Hello. MPB. A link.

Alex has $\lim_{x\rightarrow 0} \frac{\sin(x)}{x} - 1$ hair.

perfectly matched layers and PML are redirect links.

+def "\\ge" [Print "≥"]; +def "\\geq" [Print "≥"]; +def "\\neq" [Print "≠"]; +def "\\approx" [Print "≈"]; +def "\\cong" [Print "≅"]; +def "\\equiv" [Print "≡"]; +def "\\sim" [Print "∼"]; +def "\\times" [Print "×"]; +def "\\neg" [Print "¬"]; +def "\\pm" [Print "±"]; +def "\\dagger" [Print "†"]; +def "\\ne" [Print "≠"]; +def "\\in" [Print "∈"]; +def "\\forall" [Print " ∀"]; +def "\\exists" [Print "∃"]; +def "\\rightarrow" [Print "→"]; +def "\\to" [Print "→"]; +def "\\longrightarrow" [Print "–→"]; +def "\\Rightarrow" [Print "⇒"]; +def "\\leftarrow" [Print "←"]; +def "\\longleftarrow" [Print "←–"]; +def "\\Leftarrow" [Print "⇐"]; +def "\\leftrightarrow" [Print "↔"]; +def "\\sqrt" [Print "√("; Print_arg; Print ")"]; +def "\\vee" [Print "∨"]; +def "\\lor" [Print "∨"]; +def "\\wedge" [Print "∧"]; +def "\\land" [Print "∧"]; +def "\\cup" [Print "∪"]; +def "\\infty" [Print "∞"]; +def "\\tm" [Print "™"];

Math $\cdots$ go to &cdots;