0xDE on Nostr: nprofile1q…hu6hy Do sangaku count as publications? Many of them used color. Here's ...

nprofile1qyt8wumn8ghj7un9d3shjtnyd968gmewwp6kytcqypq7du7md5fwxn3nem9hzahcqw7qnk7le6d6cgvsygmg0p8hnfgqczhu6hy (nprofile…u6hy) Do sangaku count as publications? Many of them used color. Here's one of Soddy's hexlet, I think the one from 1822 (predating Soddy's 1937 publication):