adjunction between topological spaces and locales</li>
</ul>
<p>
- All the results are presented constructively and in the predicative
- fragment of Matita, without any reference to choice axioms.
+ All the results are presented constructively and in the predicative
+ fragment of Matita based on the minimalist type theory
+ by Maietti and Sambin, where choice axioms are not valid.
</p>
In order to reason conformtably on the previous concrete categories and
functors, we also present algebraic versions of all the introduced