one possible <a href="//commons.wikimedia.org/w/index.php?title=Graph_factorization&amp;action=edit&amp;redlink=1" class="new" title="Graph factorization (page does not exist)">Graph factorization</a> of <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 K_{5}}"><semantics><mrow class="MJX-TeXAtom-ORD"><mstyle displaystyle="true" scriptlevel="0"><msub><mi>K</mi><mrow class="MJX-TeXAtom-ORD"><mn>5</mn></mrow></msub></mstyle></mrow><annotation encoding="application/x-tex">{\displaystyle K_{5}}</annotation></semantics></math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/10a83da34fe45aa3be9a7d0b197417021bb4a884" class="mwe-math-fallback-image-inline" aria-hidden="true" style="vertical-align: -0.671ex; width:3.027ex; height:2.509ex;" alt="{\displaystyle K_{5}}"></span>
<a href="//commons.wikimedia.org/wiki/User:Mrmw" title="User:Mrmw">Mrmw</a>
2021-04-06
Own work based on: <a href="//commons.wikimedia.org/wiki/File:2factorK51.png" title="File:2factorK51.png">2factorK51.png</a>: <a href="//commons.wikimedia.org/wiki/File:2factorK51.png" class="image"><img alt="2factorK51.png" src="https://upload.wikimedia.org/wikipedia/commons/thumb/c/c9/2factorK51.png/80px-2factorK51.png" decoding="async" width="80" height="80" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/c/c9/2factorK51.png/120px-2factorK51.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/c/c9/2factorK51.png/160px-2factorK51.png 2x" data-file-width="378" data-file-height="378"></a>