Abstract
We give sufficient and necessary conditions to guarantee that a pseudo-effect algebra admits an (n + 1)-valued discrete state. We introduce n-perfect pseudo-effect algebras as algebras which can be split into n + 1 comparable slices. We prove that the category of strong n-perfect pseudo-effect algebras is categorically equivalent to the category of torsion-free directed partially ordered groups of a special type.
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Acknowledgments
The authors thank for the support by SAIA, n.o. (Slovak Academic Information Agency) and the Ministry of Education, Science, Research and Sport of the Slovak Republic. This work is also supported by National Science Foundation of China (Grant No. 11201279), and the Fundamental Research Funds for the Central Universities (Grant No. GK201002037). A.D. thanks for the support by Center of Excellence SAS - Quantum Technologies -, ERDF OP R&D Project meta-QUTE ITMS 26240120022, Slovak Research and Development Agency under the contract APVV-0178-11, the grant VEGA No. 2/0059/12 SAV and by CZ.1.07/2.3.00/20.0051. The authors are very indebted to an anonymous referee for his/her careful reading and suggestions which helped us to improve the readability of the paper.
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Dvurečenskij, A., Xie, Y. & Yang, A. Discrete (n + 1)-valued states and n-perfect pseudo-effect algebras. Soft Comput 17, 1537–1552 (2013). https://doi.org/10.1007/s00500-013-1001-2
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DOI: https://doi.org/10.1007/s00500-013-1001-2