A non-maximum <a href="https://en.wikipedia.org/wiki/Independent_set" class="extiw" title="en:Independent set">independent set</a> in a <a href="https://en.wikipedia.org/wiki/Claw-free_graph" class="extiw" title="en:Claw-free graph">claw-free graph</a>, and an augmenting path that can be used to increase the size of the matching
<a href="//commons.wikimedia.org/wiki/User:David_Eppstein" class="mw-redirect" title="User:David Eppstein">David Eppstein</a>
<span class="int-own-work" lang="en">Own work</span>