Timeline for Convex Hull of Outer Products of (Normalised) Nonnegative Vectors
Current License: CC BY-SA 4.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| May 7, 2019 at 3:52 | comment | added | ryanseadub | To add to the completely positive part of the answer: while checking membership of the completely positive cone is NP-hard, you can use the set of doubly non-negative matrices (i.e. positive semidefinite and entry-wise non-negative matrices): this is a valid outer approximation which is semidefinitely representable, and agrees with the copositive cone for $n \leq 4$, see sciencedirect.com/science/article/pii/S002437950900281X. | |
| May 6, 2019 at 9:41 | vote | accept | πr8 | ||
| May 6, 2019 at 9:41 | comment | added | πr8 | Perfect - thank you! | |
| May 6, 2019 at 9:39 | history | answered | Nathaniel Johnston | CC BY-SA 4.0 |