A Presentation for the Dual Symmetric Inverse Monoid

David Easdown, James East, D. G. FitzGerald

The dual symmetric inverse monoid ${\mathcal{I}}_n^{\ast }$ is the inverse monoid of all isomorphisms between quotients of an $n$-set. We give a monoid presentation of ${\mathcal{I}}_n^{\ast }$ an…