curve-shortening
... that curve-shortening causes every smooth simple closed curve to become convex and then near-circular before it shrinks to a point?
... that <b id="mwBI8"><a href="./Curve-shortening_flow" id="mwBJA" rel="mw:WikiLink" title="Curve-shortening flow">curve-shortening</a></b> causes every smooth <a href="./Jordan_curve_theorem" id="mwBJE" rel="mw:WikiLink" title="Jordan curve theorem">simple closed curve</a> to become <a href="./Convex_curve" id="mwBJI" rel="mw:WikiLink" title="Convex curve">convex</a> and then <a class="mw-redirect" href="./Roundness_(object)" id="mwBJM" rel="mw:WikiLink" title="Roundness (object)">near-circular</a> before it shrinks to a <a href="./Point_(geometry)" id="mwBJQ" rel="mw:WikiLink" title="Point (geometry)">point</a>?