se/topics/c'>c</a></span>(<span class='st'>"mutual"</span>, <span class='st'>"edges"</span>))

<span class='co'># Calculating using summary_formula</span>
<span class='no'>fm</span> <span class='kw'>&lt;-</span> <span class='no'>x</span><span class='kw'>[[</span><span class='no'>i</span>]] ~ <span class='no'>mutual</span> + <span class='no'>edges</span>
<span class='no'>ans1</span> <span class='kw'>&lt;-</span> <span class='fu'><a href='https://www.rdocumentation.org/packages/base/topics/lapply'>lapply</a><