The Automorphism Group of a Metropolis-Rota Implication Algebra
arXiv:0902.1134
Abstract
We discuss the group of automorphisms of a general MR-algebra. We develop several functors between implication algebras and cubic algebras. These allow us to generalize the notion of inner automorphism. We then show that this group is always isomorphic to the group of inner automorphisms of a filter algebra.
20 pages