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Darman
  • Member for 6 years, 1 month
  • Last seen more than a month ago
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9
Does the Banach space $( \ell ^2 \oplus \ell ^2 )$ have F.P.P?
Nov 12, 2018
question
7
If $\ $ $yx_n\to 0 $ for all $y$ in a C$^*$-algebra, Is it true that $x_n$ is weakly convergent to $0$?
Dec 24, 2018
question
4
Does a closed right ideal of a C$^*$-algebra have a C$^*$-algebra?
Nov 16, 2018
question
2
Is $\ell_2(A)$ a Hilbert C$^*$-module with Opial property?
Nov 20, 2018
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10
Find $\lim_{n\to\infty} \cos(\frac{\pi}{4}) \cos(\frac{\pi}{8})\ldots \cos(\frac{\pi}{2^n}) $
5
How to evaluate $\lim_{n \to \infty} \frac{(1+\sqrt 2)^n+(1-\sqrt 2)^n}{(1+\sqrt 2)^n-(1-\sqrt 2)^n}$?