ss="material-icons"></i></a></span> <span class="modifier_kind"><span class="modifier"></span> <span class="kind">def</span></span> <span class="symbol"><span class="name">apply</span><span class="params">(<span name="W">W: <a href="../HoTT$$Typ.html" name="provingground.HoTT.Typ" id="provingground.HoTT.Typ" class="extype">Typ</a>[<span name="provingground.induction.IterFuncPtnMap.IdIterPtnMap.O" class="extype">O</span>]</span>)</span><span class="result">: <a href="../HoTT$$Typ.html" name="provingground