Dear respected colleague,
Similarly to my previous poll on the copositive and completely positive cones (http://tinyurl.com/copositivenotation), the aim of this vote is to attempt to reach a consensus on the notation to use for the doubly nonnegative cone and its dual.
When taking part in this vote, PLEASE VOTE WITH YOUR FULL NAME. This is to try to prevent double voting. I have included a few ideas for notation, along with some of their pros and cons. Please feel free to add to these. Also, please invite and encourage other people you know from the field to take part in this vote. An alternative url for sharing this vote is: https://tinyurl.com/doublynonneg.
Thank you in advance for taking the time to vote.
Peter J.C. Dickinson
University of Twente