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Mirko Polonijo (1985)
Stochastica
The notion of a TST-space is introduced and its connection with a parallelogram space is given. The existence of a TST-space is equivalent to the existence of a parallelogram space, which is a new characterization of a parallelogram space. The structure of a TST-space is described in terms of an abelian group.
Antoni Chronowski (1994)
Archivum Mathematicum
The paper deals with the characterization of ordered sets by means of ternary semigroups of homomorphisms of ordered sets.
Jacek Michalski (1984)
Fundamenta Mathematicae
Zoran Stojaković, Janez Ušan (1979)
Publications de l'Institut Mathématique
Stojaković, Zoran, Dudek, Wiesław A. (1986)
Publications de l'Institut Mathématique. Nouvelle Série
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