Dehn function
... that in geometric group theory, a Dehn function is an optimal function associated to a finite group presentation which estimates the area of a relation in that group in terms of its length?
... that in <a href="./Geometric_group_theory" id="mwFng" rel="mw:WikiLink" title="Geometric group theory">geometric group theory</a>, a <b id="mwFnk"><a href="./Dehn_function" id="mwFno" rel="mw:WikiLink" title="Dehn function">Dehn function</a></b> is an optimal function associated to a <a class="mw-redirect" href="./Finitely_presented_group" id="mwFns" rel="mw:WikiLink" title="Finitely presented group">finite group presentation</a> which estimates the <i id="mwFnw">area</i> of a relation in that <a href="./Group_(mathematics)" id="mwFn0" rel="mw:WikiLink" title="Group (mathematics)">group</a> in terms of its length?