i3 : F = icMap R
QQ[w , w , x, y, z]
5,0 4,0
o3 = map(--------------------------------------------------------------------------------------------------------,R,{x, y, z})
2 2 2 2 3 2 2 2 3 2 2
(w z - x , w z - w x, w x - w , w x - y z - z , w w - x*y - x*z , w - w y - x z)
4,0 5,0 4,0 5,0 4,0 5,0 5,0 4,0 5,0 4,0
QQ[w , w , x, y, z]
5,0 4,0
o3 : RingMap -------------------------------------------------------------------------------------------------------- <--- R
2 2 2 2 3 2 2 2 3 2 2
(w z - x , w z - w x, w x - w , w x - y z - z , w w - x*y - x*z , w - w y - x z)
4,0 5,0 4,0 5,0 4,0 5,0 5,0 4,0 5,0 4,0
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