Abstract.
We show that quotients of generalized effect algebras by Riesz ideals preserve some important special properties, e.g., homogeneity and hereditary Riesz decomposition properties; moreover, quotients of generalized orthoalgebras, weak generalized orthomodular posets, generalized orthomodular lattices and generalized MV-algebras with respect to Riesz ideals belong to the same class. We give a necessary and sufficient condition under which a Riesz ideal I of a generalized effect algebra P is a Riesz ideal also in the unitization E of P. We also study relations between Riesz ideals and central elements in GEAs and in their unitizations. In the last section, we demonstrate the notion of Riesz ideals by some illustrative examples.
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This work was supported by Research and Development Support Agency under the contract No. APVV-0071-06, grant VEGA 2/6088/26 and Center of excellence SAS, CEPI I/2/2005.
Received June 28, 2005; accepted in final form January 23, 2007.
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Pulmannová, S., Vinceková, E. Riesz ideals in generalized effect algebras and in their unitizations. Algebra univers. 57, 393–417 (2007). https://doi.org/10.1007/s00012-007-2043-z
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DOI: https://doi.org/10.1007/s00012-007-2043-z