nLab
HeytAlg

HeytAlgHeyt Alg is the category whose objects are Heyting algebras and whose morphisms are Heyting algebra homomorphisms, that is lattice homomorphisms which also preserve the Heyting implication. HeytAlgHeyt Alg is a subcategory of Pos.

HetyAlgHety Alg is given by a finitary variety of algebras, or equivalently by a Lawvere theory, so it has all the usual properties of such categories. By general abstract nonsense, the free Heyting algebra on a set XX exists, but it is not easy to describe in general.

category: category

Created on February 1, 2010 18:53:37 by Toby Bartels (173.60.119.197)