ngground.HoTT.Termwithprovingground.HoTT.Subs[C]](dom:provingground.HoTT.Term,cod:provingground.HoTT.Typ[C]):Option[provingground.HoTT.Term]" title="Permalink"><i class="material-icons"></i></a></span> <span class="modifier_kind"><span class="modifier">abstract </span> <span class="kind">def</span></span> <span class="symbol"><span class="name">recOpt</span><span class="tparams">[<span name="C">C &lt;: <a href="../HoTT$$Term.html" name="provingground.HoTT.Term" id="provingground.HoTT.Term" class="extype"