--- -- | Given in Sorokina and Zeilfelder, p. 79.
--- prop_c0102_identity1 :: Cube -> Bool
--- prop_c0102_identity1 cube =
--- c t0' 0 1 0 2 ~= (c t0' 0 0 1 2 + c t3' 0 0 1 2) / 2
--- where
--- t0 = tetrahedron0 (face0 cube)
--- t3 = tetrahedron3 (face0 cube)
--- t0' = Tetrahedron cube (v3 t0) (v2 t0) (v1 t0) (v0 t0)
--- t3' = Tetrahedron cube (v3 t3) (v2 t3) (v1 t3) (v0 t3)
-
-
--- -- | Given in Sorokina and Zeilfelder, p. 79.
--- prop_c0201_identity1 :: Cube -> Bool
--- prop_c0201_identity1 cube =
--- c t0' 0 2 0 1 ~= (c t0' 0 1 1 1 + c t3' 0 1 1 1) / 2
--- where
--- t0 = tetrahedron0 (face0 cube)
--- t3 = tetrahedron3 (face0 cube)
--- t0' = Tetrahedron cube (v3 t0) (v2 t0) (v1 t0) (v0 t0)
--- t3' = Tetrahedron cube (v3 t3) (v2 t3) (v1 t3) (v0 t3)
-
-
--- -- | Given in Sorokina and Zeilfelder, p. 79.
--- prop_c0300_identity2 :: Cube -> Bool
--- prop_c0300_identity2 cube =
--- c t0' 3 0 0 0 ~= (c t0' 0 2 1 0 + c t3' 0 2 1 0) / 2
--- where
--- t0 = tetrahedron0 (face0 cube)
--- t3 = tetrahedron3 (face0 cube)
--- t0' = Tetrahedron cube (v3 t0) (v2 t0) (v1 t0) (v0 t0)
--- t3' = Tetrahedron cube (v3 t3) (v2 t3) (v1 t3) (v0 t3)
-
--- -- | Given in Sorokina and Zeilfelder, p. 79.
--- prop_c1101_identity :: Cube -> Bool
--- prop_c1101_identity cube =
--- c t0' 1 1 0 1 ~= (c t0' 1 1 0 1 + c t3' 1 1 0 1) / 2
--- where
--- t0 = tetrahedron0 (face0 cube)
--- t3 = tetrahedron3 (face0 cube)
--- t0' = Tetrahedron cube (v3 t0) (v2 t0) (v1 t0) (v0 t0)
--- t3' = Tetrahedron cube (v3 t3) (v2 t3) (v1 t3) (v0 t3)
-
-
--- -- | Given in Sorokina and Zeilfelder, p. 79.
--- prop_c1200_identity2 :: Cube -> Bool
--- prop_c1200_identity2 cube =
--- c t0' 1 1 1 0 ~= (c t0' 1 1 1 0 + c t3' 1 1 1 0) / 2
--- where
--- t0 = tetrahedron0 (face0 cube)
--- t3 = tetrahedron3 (face0 cube)
--- t0' = Tetrahedron cube (v3 t0) (v2 t0) (v1 t0) (v0 t0)
--- t3' = Tetrahedron cube (v3 t3) (v2 t3) (v1 t3) (v0 t3)
-
-
--- -- | Given in Sorokina and Zeilfelder, p. 79.
--- prop_c2100_identity2 :: Cube -> Bool
--- prop_c2100_identity2 cube =
--- c t0' 2 1 0 0 ~= (c t0' 2 0 1 0 + c t3' 2 0 1 0) / 2
--- where
--- t0 = tetrahedron0 (face0 cube)
--- t3 = tetrahedron3 (face0 cube)
--- t0' = Tetrahedron cube (v3 t0) (v2 t0) (v1 t0) (v0 t0)
--- t3' = Tetrahedron cube (v3 t3) (v2 t3) (v1 t3) (v0 t3)
-- -- | Given in Sorokina and Zeilfelder, p. 79.