Sets and posets with inversions

Árpád Száz
2011 Publications de l'Institut Mathématique (Beograd)  
We investigate unary operations ∨, ∧ and ♦ on a set X satisfying Moreover, if in particular X is a meet-semilattice, then we also investigate the operations defined by
doi:10.2298/pim1104111s fatcat:5wvyqrpmivhqthl5ec265rprcm