Timeline for Dual operator space
Current License: CC BY-SA 4.0
10 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 2, 2021 at 10:26 | comment | added | Just dropped in | @Abeginnermathmatician In the definition, the supremum is taken over $v$ AND $i,j$? could you please explain this and mention where you have seen this definition? | |
| Apr 25, 2021 at 6:19 | comment | added | A beginner mathmatician | @Matthew. I was trying some research problem in operator spaces. According to my other evidences this might be true. One more intuition comes from the fact that if we have a linear map $\phi:E\to M_n(\mathbb C)$ then $\|\phi\|_{cb}=\|\phi_n\|.$ This somehow indicates that to calculate the cb norm of $\phi$ it is alright to take a sup over smaller set!! | |
| Apr 24, 2021 at 20:43 | comment | added | Matthew Daws | I agree with @YemonChoi. That said, the question is not very well written: if we are meant to be considering a column vector then why write $[f_{ij}]_{i,j=1}^n$ with both $i$ and $j$ varying from $1$ to $n$? That's a matrix, not a column vector... Also, what evidence do you have for your conjecture: could you provide an example (non-trivial) Operator Space where it's true? | |
| Apr 24, 2021 at 19:15 | comment | added | A beginner mathmatician | @ Gerald. Please explain your comment further. I want to know your viewpoint more clearly. Tell me precisely your objections. | |
| Apr 24, 2021 at 17:45 | comment | added | Yemon Choi | @GeraldEdgar I don't immediately see why either this topic or this question are not MO-worthy | |
| Apr 24, 2021 at 15:07 | review | Close votes | |||
| May 1, 2021 at 3:09 | |||||
| Apr 24, 2021 at 14:58 | comment | added | Gerald Edgar | If you read the information about mathovervflow you can find this: "MathOverflow's primary goal is for users to ask and answer mathematical questions related to current research in mathematics." | |
| Apr 24, 2021 at 14:53 | comment | added | A beginner mathmatician | @Gerald. Can you please elaborate what's wrong? | |
| Apr 24, 2021 at 14:51 | comment | added | Gerald Edgar | You are asking in the wrong forum | |
| Apr 24, 2021 at 10:19 | history | asked | A beginner mathmatician | CC BY-SA 4.0 |