m,y:provingground.HoTT.Term):provingground.HoTT.DomSym"></a><a id="subs(Term,Term):DomSym"></a> <span class="permalink"><a href="../provingground/HoTT$$DomSym.html#subs(x:provingground.HoTT.Term,y:provingground.HoTT.Term):provingground.HoTT.DomSym" title="Permalink"><i class="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">subs</span><span class="params">(<span name="x">x: <a href="HoTT