Skip to main content
Log in

Essential Amenability of Fréchet Algebras

  • Published:
Ukrainian Mathematical Journal Aims and scope

The notion of essential amenability of Banach algebras has been defined and investigated. We introduce this concept for Fr´echet algebras. Then numerous well-known results concerning the essential amenability of Banach algebras are generalized for Fréchet algebras. Moreover, related results for the Segal–Fréchet algebras are also provided. As the main result, it is proved that if (𝒜,pℯ) is an amenable Fréchet algebra with a uniformly bounded approximate identity, then every symmetric Segal–Fréchet algebra in (𝒜,pℯ) is essentially amenable.

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. F. Abtahi, S. Rahnama, and A. Rejali, “Weak amenability of Fréchet algebras,” Politehn. Univ. Bucharest Sci. Bull. Ser. A Appl. Math. Phys., 77, No. 4, 93–104 (2015).

    MathSciNet  MATH  Google Scholar 

  2. F. Abtahi, S. Rahnama, and A. Rejali, “Semisimple Segal–Fréchet algebras,” Period. Math. Hungar., 71, 146–154 (2015).

    Article  MathSciNet  Google Scholar 

  3. F. Abtahi and S. Rahnama, “'-Contractibility and character contractibility of Fréchet algebras,” Ann. Funct. Anal., 8, No. 1, 75–89 (2017).

    Article  MathSciNet  Google Scholar 

  4. J. T. Burnham, “Closed ideals in subalgebras of Banach algebras,” Proc. Amer. Math. Soc., 32, No. 2, 551–555 (1972).

    Article  MathSciNet  Google Scholar 

  5. F. Ghahramani and R. J. Loy, “Generalized notions of amenability,” J. Funct. Anal., 208, 229–260 (2004).

    Article  MathSciNet  Google Scholar 

  6. H. Goldmann, “Uniform Fréchet algebras,” North-Holland Mathematics Studies, 162, North-Holland, Amsterdam; New York (1990).

  7. A. Ya. Helemskii, The Homology of Banach and Topological Algebras, Kluwer AP, Dordrecht (1989).

  8. P. Lawson and C. J. Read, “Approximate amenability of Fréchet algebras,” Math. Proc. Cambridge Philos. Soc., 145, 403–418 (2008).

    Article  MathSciNet  Google Scholar 

  9. R. Meise and D. Vogt, Introduction to Functional Analysis, Oxford Sci. Publ, Oxford (1997).

    MATH  Google Scholar 

  10. A. Yu. Pirkovskii, “Flat cyclic Fréchet modules, amenable Fréchet algebras, and approximate identities,” Homology Homotopy Appl., 11, No. 1, 81–114 (2009).

    Article  MathSciNet  Google Scholar 

  11. V. Runde, Lectures on Amenability, Springer-Verlag, Berlin–Heidelberg (2002).

    Book  Google Scholar 

  12. H. Samea, “Essential amenability of abstract Segal algebras,” Bull. Austral. Math. Soc., 79, 319–325 (2009).

    Article  MathSciNet  Google Scholar 

  13. L. B. Schweitzer, Dense Nuclear Fréchet Ideals in C*-Algebras, University of California, San Francisco, Preprint (2013).

  14. H. H. Schaefer, “Topological vector spaces,” Third Printing Corrected, Graduate Text in Mathematics, 3, Springer, New York (1971).

    Google Scholar 

  15. M. Sugiura, “Fourier series of smooth functions on compact Lie groups,” Osaka J. Math., 8, 33–47 (1971).

    MathSciNet  MATH  Google Scholar 

  16. J. L. Taylor, “Homology and cohomology for topological algebras,” Adv. Math., 9, 137–182 (1972).

    Article  MathSciNet  Google Scholar 

  17. J. Voigt, “Factorization in Fréchet algebras,” J. Lond. Math. Soc. (2), 29, No. 1, 147–152 (1984).

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to F. Abtahi.

Additional information

Published in Ukrains’kyi Matematychnyi Zhurnal, Vol. 72, No. 7, pp. 867–876, July, 2020. Ukrainian DOI: 10.37863/umzh.v72i7.830.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Abtahi, F., Rahnama, S. Essential Amenability of Fréchet Algebras. Ukr Math J 72, 1007–1017 (2020). https://doi.org/10.1007/s11253-020-01839-1

Download citation

  • Received:

  • Revised:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11253-020-01839-1

Navigation