/">Labeling Elements</a></li><li><a class="tocitem" href="../multigraphs/">Multigraphs</a></li><li><a class="tocitem" href="../design/">Module Design</a></li><li class="is-active"><a class="tocitem" href>What is a Matroid?</a><ul class="internal"><li><a class="tocitem" href="#Core-Definitions"><span>Core Definitions</span></a></li><li><a class="tocitem" href="#Why?"><span>Why?</span></a></li></ul></li><li><a class="tocitem" href="../functions/">Types/Functions</a></li></ul><div class="docs-version-selector 