Graphic element for <a href="https://en.wikipedia.org/wiki/Coxeter-Dynkin_diagram" class="extiw" title="en:Coxeter-Dynkin diagram">Coxeter-Dynkin diagram</a> with whole numbers
<a href="//commons.wikimedia.org/wiki/User:Tomruen" title="User:Tomruen">Tomruen</a>
<span class="int-own-work" lang="en">Own work</span>