I was not aware of that. Yet another reason to continue being impressed. > On Sep 8, 2019, at 4:43 PM, Roger Hui <rogerhui.can...@gmail.com> wrote: > > A further personal note: The recursive QR and a couple of similar > decompositions are how I got to Erdős 2.
---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm