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Weak topological centers and cohomological properties | ||
Caspian Journal of Mathematical Sciences | ||
مقاله 22، دوره 11، شماره 1، 2022، صفحه 250-263 اصل مقاله (117.85 K) | ||
نوع مقاله: Research Articles | ||
شناسه دیجیتال (DOI): 10.22080/cjms.2021.3051 | ||
نویسندگان | ||
Kazem Haghnejad Azar* 1؛ Mostfa Shams2 | ||
1University of Mohghegh Ardabili | ||
2Islamic Azad University | ||
تاریخ دریافت: 15 اردیبهشت 1398، تاریخ بازنگری: 14 مهر 1399، تاریخ پذیرش: 15 مهر 1399 | ||
چکیده | ||
Let $B$ be a Banach $A-bimodule$. We introduce the weak topological centers of left module action and we show it by $\tilde{{Z}}^\ell_{B^{**}}(A^{**})$. For a compact group, we show that $L^1(G)=\tilde{Z}_{M(G)^{**}}^\ell(L^1(G)^{**})$ and on the other hand we have $\tilde{Z}_1^\ell{(c_0^{**})}\neq c_0^{**}$. Thus the weak topological centers are different with topological centers of left or right module actions. In this manuscript, we investigate the relationships between two concepts with some conclusions in Banach algebras. We also have some application of this new concept and topological centers of module actions in the cohomological properties of Banach algebras, spacial, in the weak amenability and $n$-weak amenability of Banach algebras. | ||
کلیدواژهها | ||
Weak topological center؛ Amenability؛ Weak amenability؛ Cohomology groups | ||
آمار تعداد مشاهده مقاله: 232 تعداد دریافت فایل اصل مقاله: 190 |