graph

  • ...
    Sun, 26 Nov 2017 16:00:54 +0900, by Shinji KONO
  • fill proofs
    Sun, 26 Nov 2017 14:33:12 +0900, by Shinji KONO
  • Free Theorem complete
    Sun, 26 Nov 2017 10:59:38 +0900, by Shinji KONO