Skip to main content
Log in

Strong Morita equivalence for ordered semigroups with local units

  • Published:
Periodica Mathematica Hungarica Aims and scope Submit manuscript

Abstract

We prove that partially ordered semigroups with local units are strongly Morita equivalent if and only if they have a joint enlargement, which in turn happens if and only if the Cauchy completions of the semigroups are equivalent.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  1. J. Adamek, H. Herrlich and G. E. Strecker, Abstract and Concrete Categories, John Wiley and Sons, New York, 1990; http://katmat.math.uni-bremen.de/acc.

    MATH  Google Scholar 

  2. S. Bulman-Fleming, Flatness properties of S-posets: an overview, Proceedings of the International Conference on Semigroups, Acts and Categories with Applications to Graphs (Tartu, Estonia, June 27–30, 2007), V. Laan, S. Bulman-Fleming, R. Kaschek (eds.), Estonian Mathematical Society, Tartu, 2008, 28–40.

    Google Scholar 

  3. G. Czédli and A. Lenkehegyi, On classes of ordered algebras and quasiorder distributivity, Acta Sci. Math. (Szeged), 46 (1983), 41–54.

    MathSciNet  MATH  Google Scholar 

  4. G. M. Kelly, Basic Concepts of Enriched Category Theory, London Math. Soc. Lecture Notes Series, vol. 64, Cambridge Univ. Press, Cambridge, 1982.

    MATH  Google Scholar 

  5. V. Laan, Context equivalence of semigroups, Period. Math. Hungar., 60 (2010), 81–94.

    Article  MathSciNet  MATH  Google Scholar 

  6. V. Laan, Morita theorems for partially ordered monoids, Proc. Est. Acad. Sci., 60 (2011), 221–237.

    Article  MathSciNet  MATH  Google Scholar 

  7. M. V. Lawson, Morita theory for semigroups with local units, J. Pure Appl. Algebra, 215 (2011), 455–470.

    Article  MathSciNet  MATH  Google Scholar 

  8. B. Pécsi, On Morita contexts in bicategories, Appl. Categ. Structures, doi: 10.1007/s10485-011-9247-2.

  9. S. Talwar, Morita equivalence for semigroups, J. Aust. Math. Soc. (Series A), 59 (1995), 81–111.

    Article  MathSciNet  MATH  Google Scholar 

  10. S. Talwar, Strong Morita equivalence and a generalisation of the Rees theorem, J. Algebra, 181 (1996), 371–394.

    Article  MathSciNet  MATH  Google Scholar 

  11. L. Tart, Characterizations of strong Morita equivalence for ordered semigroups with local units, Math. Slovaca, to appear.

  12. L. Tart, Conditions for strong Morita equivalence of partially ordered semigroups with local units, Cent. Eur. J. Math., 9 (2011), 1100–1113.

    Article  MathSciNet  MATH  Google Scholar 

  13. L. Tart, Morita invariants for partially ordered semigroups with local units, Proc. Est. Acad. Sci., 61 (2012), 38–47.

    Article  MathSciNet  MATH  Google Scholar 

  14. L. Tart, On Morita equivalence of partially ordered semigroups with local units, Acta Comment. Univ. Tartu. Math., 15 (2011), 15–34.

    MathSciNet  MATH  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Lauri Tart.

Additional information

Communicated by Mária B. Szendrei

This research was supported by Estonian Science Foundation Grant No. 8394 and by Estonian Targeted Financing Project SF0180039s08.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Tart, L. Strong Morita equivalence for ordered semigroups with local units. Period Math Hung 65, 29–43 (2012). https://doi.org/10.1007/s10998-012-7140-x

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10998-012-7140-x

Mathematics subject classification numbers

Key words and phrases

Navigation