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K1216

too complicated to be written here. Click on the link to download a text file.

on both curves : X(2), X(3), X(4), X(13), X(14), X(15), X(16), X(17), X(18)

on K1216a : X(42166), X(42598), X(42630), X(42632), X(n even) in {X(42940), ..., X(42971)}

on K1216b : X(42163), X(42599), X(42629), X(42631), X(n odd) in {X(42940), ..., X(42971)}

Geometric properties :

K1216a and K1216b are the KHO-cubics with respective KHO-equations :

(2 x - 3 y) (x + z) (x + 2 y - z) - 7 (2 x + 3 y) (x - z) (x - 2 y + z) = 0

7 (2 x - 3 y) (x + z) (x + 2 y - z) - (2 x + 3 y) (x - z) (x - 2 y + z) = 0

See K1191 for explanations and also CL075.