Deletion of Gravity set

Comment: I'm willing to accept articles on very obscure mathematical subjects but they need to have some reliably published literature from more than one author or group of authors. I found nothing on this in Google scholar and nothing in Google books, which together should cover a large fraction of the scholarly mathematics research literature and the published popular mathematics literature. This article has been here for 6 1/2 years and in that time has managed only to find two |self-published web pages as sources. This satisfies (barely) the "more than one author" part but not the reliably published part. It is also troubling that the softology link points back to the article here for more (any) information; we should not be doing such circular referencing. And both links just contain galleries of images with no description of the mathematics behind them, so effectively the entire article here is unsourced. Therefore, it is |original research and should not be covered here. But I'd be willing to change my mind if the week-long AfD period can be more effective than the past years in turning up real references
Stance: delete
Cited policy: Wikipedia:Verifiability (WP:SPS||WP:OR)