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Jamie Gabe's user avatar
Jamie Gabe's user avatar
Jamie Gabe
  • Member for 6 years, 5 months
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28 Answers

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15 votes
Accepted

What is the significance of the Jiang Su algebra in classification of C$^*$ -algebras?

13 votes
Accepted

For what kind of $C^*$ algebras does the inequality $\frac{(ab+ba)}{2}\leq\frac{ a^p}{p} +\frac{b^q }{q}$ hold for $a,b>0$?

12 votes
Accepted

A non nuclear $C^*$ algebra $A$ for which the algebraic tensor product $A\otimes A$ admits a unique $C^*$ norm

12 votes
Accepted

Faithful traces on quasi-diagonal C*-algebras

10 votes
Accepted

Endomorphisms of the Cuntz algebra

8 votes
Accepted

Residually finite-dimensional $C^*$-algebra

8 votes
Accepted

Monotone approximation of elements in AF-algebras

7 votes
Accepted

Every element of a $W^*$-algebra is a linear combination of exponential unitaries?

7 votes

Morita-invertible C*-algebras

7 votes
Accepted

multiplier algebra of a simple $C^*$ algebra

7 votes
Accepted

Is the reduced group $C^*$-algebra quasidiagonal

6 votes
Accepted

example of a non-amenable l.c. group such that $C_r^*(G)$ satisfies the UCT

6 votes
Accepted

Approximating a projection by a sum of elementary tensors with a certain property

6 votes
Accepted

Approximation from below of positive elements in tensor product of von Neumann algebras

6 votes
Accepted

Example: traceless C*-algebra universally generated by projections

5 votes
Accepted

Primitive ideals of minimal tensor product

5 votes
Accepted

Show that $\Lambda_\varphi(x_n)\to \Lambda_\varphi(x)$ for an nsf weight $\varphi$ on a von Neumann algebra

5 votes
Accepted

Two densely defined traces on a $C^*$-algebra coinciding on a dense subalgebra are equal

5 votes
Accepted

Is $N_\phi = \{x \in E: \phi(\langle x,x\rangle)=0\}$ a Hilbert submodule of $E$?

5 votes
Accepted

Direct proof of "Nuclear implies $C_{red}^*(G) \cong C^*(G)$"

5 votes
Accepted

Is there a C*-algebra whose Pedersen ideal is not proper?

5 votes
Accepted

About nuclear-by-exact extensions

4 votes
Accepted

Stable rank one and corners of $C^\ast$-algebras

4 votes
Accepted

Convolution of functionals on compact quantum group

4 votes
Accepted

Decomposition of an element as a difference of positive elements in the definition subalgebra of a weight (Takesaki)

3 votes
Accepted

Question on Cuntz' proof of Bott periodicity

2 votes

Pure infiniteness of tensor product $C^\ast$-algebras

1 vote
Accepted

Strict topology on the multiplier algebra