Ok, I can almost see a connection now. My coworker sent me this stack exchange post:
https://mathematica.stackexchange.com/questions/91651/nearest-kronecker-product This led me to this Springer article: https://link.springer.com/chapter/10.1007%2F978-94-015-8196-7_17 and this ScienceDirect article: https://www.sciencedirect.com/science/article/pii/S0377042700003939?via%3Dihub I will likely need to dive in a bit more and maybe test the MatLab code against my handworked examples. Thanks again for the pointer. Also, totally orthogonal to this topic, this paper also came up at work: https://pubs.acs.org/doi/full/10.1021/acs.jctc.1c00562
.-- .- -. - / .- -.-. - .. --- -. ..--.. / -.-. --- -. .--- ..- --. .- - . FRIAM Applied Complexity Group listserv Zoom Fridays 9:30a-12p Mtn UTC-6 bit.ly/virtualfriam un/subscribe http://redfish.com/mailman/listinfo/friam_redfish.com FRIAM-COMIC http://friam-comic.blogspot.com/ archives: 5/2017 thru present https://redfish.com/pipermail/friam_redfish.com/ 1/2003 thru 6/2021 http://friam.383.s1.nabble.com/