s added by an implicit conversion from <a href="" name="provingground.HoTT.SymbObj" id="provingground.HoTT.SymbObj" class="extype">SymbObj</a>[<span name="provingground.HoTT.SymbObj.U" class="extype">U</span>] to<span name="scala.Predef.ArrowAssoc" class="extype">ArrowAssoc</span>[<a href="" name="provingground.HoTT.SymbObj" id="provingground.HoTT.SymbObj" class="extype">SymbObj</a>[<span name="provingground.HoTT.SymbObj.U" class="extype">U</span>]] performed by method ArrowAssoc in scala.Predef.</dd><dt>De