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A note on some ordered ring

Published online by Cambridge University Press:  22 January 2016

Masahiro Yasumoto*
Affiliation:
Nagoya University
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Extract

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An ordered ring with the least positive element 1 is a “Z-ring” if for each natural number n,

Type
Research Article
Copyright
Copyright © Editorial Board of Nagoya Mathematical Journal 1978

References

[1] Bell, J. L. and Slomson, A. B.: Models and Ultraproducts. Amsterdam, North-Holland Publishing Company, 1969.Google Scholar
[2] Chang, C. C. and Keisler, J.: Model Theory, North-Holland.Google Scholar