Every non-singular complex projective cubic surface has $27$ lines. An Eckardt point of a cubic surface is a point where three of the lines intersect. The Fermat cubic has $18$ Eckardt points. What is the maximum number of Eckardt points of a non-singular complex projective cubic surface?
2026-04-08 11:36:22.1775648182
What is the maximum number of Eckardt points of a non-singular cubic surface?
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