Exercise 111.61.7. Let k be an algebraically closed field. Let S \subset \mathbf{P}^3_ k be a smooth hypersurface of degree d. Assume that S contains a line \ell . What is the self square of \ell viewed as a divisor on S?
Exercise 111.61.7. Let k be an algebraically closed field. Let S \subset \mathbf{P}^3_ k be a smooth hypersurface of degree d. Assume that S contains a line \ell . What is the self square of \ell viewed as a divisor on S?
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