Солярис. Симметриада

https://blog.alexandreev.com/2016/10/03/%d1%81%d0%be%d0%bb%d1%8f%d1%80%d0%b8%d1%81-%d1%81%d0%b8%d0%bc%d0%bc%d0%b5%d1%82%d1%80%d0%b8%d0%b0%d0%b4%d0%b0/