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knot's user avatar
knot
  • Member for 7 years, 5 months
  • Last seen more than a week ago
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2
why the irrational rotation algebra $A_{\theta}$ is $C(T^{2})$ when $\theta =0$
Oct 11, 2018
1
why this sequence is exact?
Sep 25, 2018
1
How to imbed the irrational rotation algebra into AF algebra?
Oct 8, 2018
1
A problem in the proof of the irrational rotational algebra has unique trace
Oct 12, 2018
1
let $\phi : B(l^{p}(X)) \to B(l^{p}(Y)) $ be an isomorphism, does $\phi$ necessarily preserve rank of operators?
Jul 1
0
does every simple Jordan closed curve has Inscribed rectangle?
Feb 1, 2017
0
a series from continued fraction expansion of an irrational number
Oct 11, 2018
0
Prove that symbolic dynamics is topological mixing
Dec 17, 2018
0
Prove that in Hopf bundle $p:S^3\to S^2$, every two fibers are linked with linking number one. [duplicate]
Apr 24
-2
Show that $\mathbb{Z}_n$ always has an even number of idempotents. [closed]
Apr 6, 2017