Ron Graham has left us
en.wikipedia.org
en.wikipedia.org
We didn't meet often, but I'm sad to think I won't see him again. I'll miss him.
[0] https://www.solipsys.co.uk/new/MeetingRonGraham.html?tg07hn
FWIW, the David Eisenbud mentioned there is one of the other authors on the paper I co-authored with Ron, and via which I got my Erdos number (of the first kind) of 2.
But that piece by Brady exactly reflects the kind of person Ron was. Enthusiastic, engaging, personable.
There have been no official announcements in print that Wikipedia are willing to accept as definitive. I've got my information from professional research mathematicians who have worked in related areas, and knew him well.