4-subspace quiver
<a href="//commons.wikimedia.org/wiki/User:Patrick87" title="User:Patrick87">Patrick87</a>
2015-11-01
<span class="int-own-work" lang="en">Own work</span> with LaTeX code from <a rel="nofollow" class="external autonumber" href="http://tex.stackexchange.com/a/232976">[1]</a>