Alan J. Cain · A simple non-bisimple congruence-free finitely presented monoid

‘A simple non-bisimple congruence-free finitely presented monoid’: (with V. Maltcev)

Semigroup Forum 90, no. 1 (February 2015), pp. 184–188.

DOI: 10.1007/s00233-014-9607-y

We exhibit an example of a finitely presented monoid that is congruence-free and simple but not bisimple.