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Julien
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21
On complemented von Neumann algebras
Jul 4, 2013
question
10
Stable rank one and corners of $C^\ast$-algebras
Jan 19, 2021
question
7
Gelfand representation and functional calculus applications beyond Functional Analysis
Apr 18, 2013
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7
Structure theorem for finite dimensional $C^*$-algebras and their representations
Jul 25, 2013
question
4
On the self-adjoint part of a quasinilpotent operator
May 3, 2013
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4
If two projections are close, then they are unitarily equivalent
Dec 18, 2013
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3
Expression of a non-orthogonal projection in a $C^*$ algebra via an orthogonal one
Nov 13, 2013
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2
Unicity of a vector space frame's dual frame
Jun 2, 2013
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2
Stable rank one and corners of $C^\ast$-algebras
Mar 11, 2021
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72
Prove $|e^{i\theta} -1| \leq |\theta|$
58
How to prove every closed interval in R is compact?
51
Nice examples of groups which are not obviously groups
50
Change of basis matrix to convert standard basis to another basis
47
If $d(x,y)$ is a metric, then $\frac{d(x,y)}{1 + d(x,y)}$ is also a metric