2 citations · 3 across the 4 of their papers we have counts for
4 papers
Hereditary rigidity, separation and density In memory of Professor I.G. Rosenberg
Lucien Haddad, Masahiro Miyakawa, Maurice Pouzet +1
We continue the investigation of systems of hereditarily rigid relations started in Couceiro, Haddad, Pouzet and Schölzel [1]. We observe that on a set with elements, there…
Partial clones containing all Boolean monotone self-dual partial functions
Miguel Couceiro, Lucien Haddad, Ivo G. Rosenberg
The study of partial clones on was initiated by R. V. Freivald. In his fundamental paper published in 1966, Freivald showed, among other things, that the set…
Hereditarily rigid relations
Miguel Couceiro, Lucien Haddad, Maurice Pouzet +1
An -ary relation $\r$ on a finite set is said to be \emph{hereditarily rigid} if the unary partial functions on that preserve $\r$ are the subfunctions of the identity m…
Finitely generated maximal partial clones and their intersections
Miguel Couceiro, Lucien Haddad
Let A be a finite non-singleton set. For |A|=2 we show that the partial clone consisting of all selfdual monotone partial functions on A is not finitely generated, while it is the…