File:Rotations on the complex plane.svg

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Original file (SVG file, nominally 785 × 777 pixels, file size: 18 KB)

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Summary

[edit]
Description Four numbers on the real line are multiplied by integer powers of the imaginary unit, which corresponds to rotations by multiples of the right angle.
Source Self-made. Written in TeX with TikZ, compiled using latex rot.tex && dvisvgm -n -c1.75 rot.dvi
Author Keφr

TeX source

[edit]
\documentclass{article}
 
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{tikz}
\usepackage{scalefnt}
 
\begin{document}
\pagestyle{empty}
 
\def\rotarc#1#2#3#4#5{
  \draw[#2,fill=#2] (#1,0) circle (0.03);
  \draw[#2,fill=#2] ({#1*cos(#3)},{#1*sin(#3)}) circle (0.03);
  \draw[thick,->,#2] (#1,0.075) arc (asin(0.075/#1):#3/2:#1) node [anchor=#5] {#4} arc (#3/2:#3-asin(0.075/#1):#1) ;
}

\begin {tikzpicture} [scale=2]
  \draw[dashed,->]      (-3.1,0) -- (3.1,0) node [anchor=north] {Re} ;
  \draw[dashed,->]      (0,-3.1) -- (0,3.1) node [anchor=west ] {Im} ;

  \rotarc {0.5} {red   } { 90} {$i^1 =  i$} {south west}
  \rotarc {1.2} {olive } {180} {$i^2 = -1$} {south west}
  \rotarc {1.9} {teal  } {270} {$i^3 = -i$} {south east}
  \rotarc {2.6} {blue  } {360} {$i^4 =  1$} {south east}
\end {tikzpicture}
 
\end{document}

Licensing

[edit]
I, the copyright holder of this work, hereby publish it under the following license:
Creative Commons CC-Zero This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication.
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.

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Date/TimeThumbnailDimensionsUserComment
current14:37, 23 October 2014Thumbnail for version as of 14:37, 23 October 2014785 × 777 (18 KB)Kephir (talk | contribs){{Information |Description=Four numbers on the real line are multiplied by integer powers of the imaginary unit, which corresponds to rotations by multiples of the right angle. |Source=Self-made. Written in TeX with TikZ, compiled using <code>latex rot...

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