nLab monadic algebra

Monadic algebras


Monadic algebras are type one modal algebras, in which the single operator behaves like a closure operation in a topological space, (so these are closure algebras) and, in addition, elements are closed if and only if they are open.



A monadic algebra is a closure algebra, (𝔹,m)(\mathbb{B}, m), which satisfies: for all xx, xlmxx\leq l m x, where, as usual, ll is a shorthand for ¬m¬\neg m \neg.

Last revised on December 24, 2010 at 07:18:48. See the history of this page for a list of all contributions to it.