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    • Atomic Sequential Effect Algebras 

      Author: Tkadlec, Josef
      Various conditions ensuring that a sequential effect algebra or the set of sharp elements of a sequential effect algebra is a Boolean algebra are presented.
    • Common generalizations of orthocomplete and lattice effect algebras 

      Author: Tkadlec, Josef
      Connections between the weak orthocompleteness and the maximality property in e ect algebras are presented. It is proved that an orthomodular poset with the maximality property is disjunctive. A characterization of ...