Arash Irani

4 Questions 8 Answers 0 Followers

Questions related from Arash Irani

Contractible Banach algebras?

Let A Banach algebra, A is contractible if H1(A,X)=0 for all Banach A-bimodules X . Now to my question Let A be Banach algebra and I be closed ideal of A. If I and A/I are both contractible,...

20 May 2019 1,465 3 View

Exercise books in Banach algebra?

I'm studying Banach algebra and I was wondering if there are some exercise books (that is, books with solved problems and exercises) The books I'm searching for should be: rich of complete, step...

26 December 2018 5,504 0 View

How to prove $\limsup\limits_{n\to\infty}\rho_k(x_n+x)=\limsup\limits_{n\to\infty}\rho_k(x_n)+\rho(x)?$ on $\ell_1$

Let $p(.)$ be an equivalent norm to the usual norm on $\ell_1$ such that $$\limsup\limits_{n\to\infty} p(x_n+x)=\limsup\limits_{n\to\infty}p(x_n)+p(x)$$ for every $w^*-$null sequence $(x_n)$ and...

21 July 2016 7,206 7 View

I am working on "geometry of Banach spaces and applications in metric fixed point theory ". Is anyone interested in collaboration?

I am working on geometry of banach spces and applications in metric fixed point theory , especially my interesting is renorming of Banach spaces, Is anyone interested in collaboration

24 November 2015 9,378 30 View