<div class="thumb tright"><div class="thumbinner" style="width:142px;"><a href="//commons.wikimedia.org/wiki/File:Little-endian_binary.svg" class="image"><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/8/82/Little-endian_binary.svg/140px-Little-endian_binary.svg.png" decoding="async" width="140" height="251" class="thumbimage" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/8/82/Little-endian_binary.svg/210px-Little-endian_binary.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/8/82/Little-endian_binary.svg/280px-Little-endian_binary.svg.png 2x" data-file-width="819" data-file-height="1467"></a>  <div class="thumbcaption"><div class="magnify"><a href="//commons.wikimedia.org/wiki/File:Little-endian_binary.svg" class="internal" title="Enlarge"></a></div><small><small>The numbers in the top left matrix are the <a href="https://en.wikiversity.org/wiki/User:Watchduck/hat#Reverse_binary" class="extiw" title="v:User:Watchduck/hat">reverse binary</a> interpretation of the <a href="https://en.wikiversity.org/wiki/User:Watchduck/hat#Nibble_shorthands" class="extiw" title="v:User:Watchduck/hat">nibble shorthands</a> in the big matrix.</small></small></div></div></div>
<p>Jupiter <a href="https://en.wikipedia.org/wiki/magic_square" class="extiw" title="w:magic square">magic square</a> (<a href="https://en.wikipedia.org/wiki/number" class="extiw" title="w:number">numerical</a> and <a href="https://en.wikipedia.org/wiki/vector_space" class="extiw" title="w:vector space">vectorial</a>) 
</p><p>The elements can be seen as numbers from 0 to 15.<br> They sum up to 30.<br>
See: <a href="//commons.wikimedia.org/wiki/File:Jupiter_square_magic_sums_numerical.svg" title="File:Jupiter square magic sums numerical.svg">File:Jupiter square magic sums numerical.svg</a>
</p><p>The elements can be seen as vectors from <span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle (\mathbb {Z} /2\mathbb {Z} )^{4}}"><semantics><mrow class="MJX-TeXAtom-ORD"><mstyle displaystyle="true" scriptlevel="0"><mo stretchy="false">(</mo><mrow class="MJX-TeXAtom-ORD"><mi mathvariant="double-struck">Z</mi></mrow><mrow class="MJX-TeXAtom-ORD"><mo>/</mo></mrow><mn>2</mn><mrow class="MJX-TeXAtom-ORD"><mi mathvariant="double-struck">Z</mi></mrow><msup><mo stretchy="false">)</mo><mrow class="MJX-TeXAtom-ORD"><mn>4</mn></mrow></msup></mstyle></mrow><annotation encoding="application/x-tex">{\displaystyle (\mathbb {Z} /2\mathbb {Z} )^{4}}</annotation></semantics></math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/31e6377ca086aedf49b5e9f4a375b512a4235224" class="mwe-math-fallback-image-inline" aria-hidden="true" style="vertical-align: -0.838ex; width:8.289ex; height:3.176ex;" alt="{\displaystyle (\mathbb {Z} /2\mathbb {Z} )^{4}}"></span>.<br> They sum up to the <a href="https://en.wikipedia.org/wiki/null_vector" class="extiw" title="w:null vector">null vector</a>.<br>
See: <a href="//commons.wikimedia.org/wiki/File:Jupiter_square_magic_sums_vectorial.svg" title="File:Jupiter square magic sums vectorial.svg">File:Jupiter square magic sums vectorial.svg</a>
</p><p>This is the magic square from Dürer's <a href="https://en.wikipedia.org/wiki/Melencolia_I" class="extiw" title="w:Melencolia I">Melencolia I</a> - turned, reflected and all numbers subtracted by 1.
</p>
<a href="//commons.wikimedia.org/wiki/File:Melencolia_square_turned_and_reflected.png" class="image"><img alt="Melencolia square turned and reflected.png" src="https://upload.wikimedia.org/wikipedia/commons/thumb/5/58/Melencolia_square_turned_and_reflected.png/700px-Melencolia_square_turned_and_reflected.png" decoding="async" width="700" height="198" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/5/58/Melencolia_square_turned_and_reflected.png/1050px-Melencolia_square_turned_and_reflected.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/5/58/Melencolia_square_turned_and_reflected.png/1400px-Melencolia_square_turned_and_reflected.png 2x" data-file-width="6133" data-file-height="1733"></a>
<table><tbody><tr><td style="padding: 15px;"><a href="//commons.wikimedia.org/wiki/File:Watchduck.svg" class="image"><img alt="Watchduck.svg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/d/d8/Watchduck.svg/40px-Watchduck.svg.png" decoding="async" width="40" height="46" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/d/d8/Watchduck.svg/60px-Watchduck.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/d/d8/Watchduck.svg/80px-Watchduck.svg.png 2x" data-file-width="703" data-file-height="806"></a>
</td>
<td><a href="//commons.wikimedia.org/wiki/User:Watchduck" title="User:Watchduck">Watchduck</a><br><span style="color: gray; font-size: 80%;">You can name the author as "T. Piesk", "Tilman Piesk" or "Watchduck".</span>
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CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>