$$Unit$.html" name="provingground.HoTT.Unit" id="provingground.HoTT.Unit" class="extype">Unit</a> and the empty type <a href="HoTT$$Zero$.html" name="provingground.HoTT.Zero" id="provingground.HoTT.Zero" class="extype">Zero</a>
-   recursion and induction functions for products, coproducts</p><p>General inductive types are <code><code>not</code></code> implemented here, but in the <a href="induction/index.html" name="provingground.induction" id="provingground.induction" class="extype">induction</a> package.