Problems concerning n -weak amenability of a Banach algebra

Alireza Medghalchi; Taher Yazdanpanah

Czechoslovak Mathematical Journal (2005)

  • Volume: 55, Issue: 4, page 863-876
  • ISSN: 0011-4642

Abstract

top
In this paper we extend the notion of n -weak amenability of a Banach algebra 𝒜 when n . Technical calculations show that when 𝒜 is Arens regular or an ideal in 𝒜 * * , then 𝒜 * is an 𝒜 ( 2 n ) -module and this idea leads to a number of interesting results on Banach algebras. We then extend the concept of n -weak amenability to n .

How to cite

top

Medghalchi, Alireza, and Yazdanpanah, Taher. "Problems concerning $n$-weak amenability of a Banach algebra." Czechoslovak Mathematical Journal 55.4 (2005): 863-876. <http://eudml.org/doc/30994>.

@article{Medghalchi2005,
abstract = {In this paper we extend the notion of $n$-weak amenability of a Banach algebra $\mathcal \{A\}$ when $n\in \mathbb \{N\}$. Technical calculations show that when $\mathcal \{A\}$ is Arens regular or an ideal in $\mathcal \{A\}^\{**\}$, then $\mathcal \{A\}^*$ is an $\mathcal \{A\}^\{(2n)\}$-module and this idea leads to a number of interesting results on Banach algebras. We then extend the concept of $n$-weak amenability to $n \in \mathbb \{Z\}$.},
author = {Medghalchi, Alireza, Yazdanpanah, Taher},
journal = {Czechoslovak Mathematical Journal},
keywords = {Banach algebra; weakly amenable; Arens regular; $n$-weakly amenable; Banach algebra; weakly amenable; Arens regular},
language = {eng},
number = {4},
pages = {863-876},
publisher = {Institute of Mathematics, Academy of Sciences of the Czech Republic},
title = {Problems concerning $n$-weak amenability of a Banach algebra},
url = {http://eudml.org/doc/30994},
volume = {55},
year = {2005},
}

TY - JOUR
AU - Medghalchi, Alireza
AU - Yazdanpanah, Taher
TI - Problems concerning $n$-weak amenability of a Banach algebra
JO - Czechoslovak Mathematical Journal
PY - 2005
PB - Institute of Mathematics, Academy of Sciences of the Czech Republic
VL - 55
IS - 4
SP - 863
EP - 876
AB - In this paper we extend the notion of $n$-weak amenability of a Banach algebra $\mathcal {A}$ when $n\in \mathbb {N}$. Technical calculations show that when $\mathcal {A}$ is Arens regular or an ideal in $\mathcal {A}^{**}$, then $\mathcal {A}^*$ is an $\mathcal {A}^{(2n)}$-module and this idea leads to a number of interesting results on Banach algebras. We then extend the concept of $n$-weak amenability to $n \in \mathbb {Z}$.
LA - eng
KW - Banach algebra; weakly amenable; Arens regular; $n$-weakly amenable; Banach algebra; weakly amenable; Arens regular
UR - http://eudml.org/doc/30994
ER -

References

top
  1. Amenability and weak amenability for Beurling and Lipschitz algebra, Proc. London Math. Soc. 55 (1987), 359–377. (1987) MR0896225
  2. Derivations into iterated duals of Banach algebras, Studia Math. 128 (1998), 19–54. (1998) MR1489459
  3. 10.1112/S0024610701002496, J.  London Math. Soc. 64 (2001), 707–721. (2001) MR1865558DOI10.1112/S0024610701002496
  4. 10.4153/CMB-1994-024-4, Canad. Math. Bull. 37 (1994), 165–167. (1994) MR1275699DOI10.4153/CMB-1994-024-4
  5. The second dual of a Banach algebra, Proc. Roy. Soc. Edinburgh 84A (1978), 309–325. (1978) MR0559675
  6. Weak amenability of group algebras, Bull. London Math. Soc. 23 (1991), 231–284. (1991) MR1123339
  7. 10.1007/BF01394319, Invent. Math. 74 (1983), 305–319. (1983) Zbl0529.46041MR0723220DOI10.1007/BF01394319
  8. Cohomology in Banach Algebras, Mem. Amer. Math. Soc. 127 (1972). (1972) Zbl0256.18014MR0374934
  9. 10.1112/blms/23.3.281, Bull. Lodon Math. Soc. 23 (1991), 281–284. (1991) Zbl0757.43002MR1123339DOI10.1112/blms/23.3.281
  10. Banach Algebra, the General Theory of * -algebra. Vol.  1: Algebra and Banach Algebras, Cambridge University Press, Cambridge, 1994. (1994) MR1270014

NotesEmbed ?

top

You must be logged in to post comments.

To embed these notes on your page include the following JavaScript code on your page where you want the notes to appear.

Only the controls for the widget will be shown in your chosen language. Notes will be shown in their authored language.

Tells the widget how many notes to show per page. You can cycle through additional notes using the next and previous controls.

    
                

Note: Best practice suggests putting the JavaScript code just before the closing </body> tag.