Mathematicians-- The first article referenced below mentions Iverson and APL in early pages, but the graphic notation is definitely more complex than either APL or J. I am not competent to judge whether some of the operations they discuss are amenble to J implementation, or would be worthwhile.
For those interested in notation per se, two additional references discuss notations for quantum interactions pictorially, and in Quon, which requires three dimensions to notate its operations. --Art ATL: http://people.csail.mit.edu/lamanda/assets/documents/LiuPOPL2022.pdf <http://people.csail.mit.edu/lamanda/assets/documents/LiuPOPL2022.pdf> Mathematical picture language: https://mathpicture.fas.harvard.edu <https://mathpicture.fas.harvard.edu/> Quon: https://www.pnas.org/content/pnas/115/1/81.full.pdf <https://www.pnas.org/content/pnas/115/1/81.full.pdf> ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
