Threefolds of order one in the six-quadric
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Consider the smooth quadric Q 6 in ℙ7. The middle homology group H 6(Q 6, ℤ) is isomorphic to ℤ ⊕ ℤ, with a basis given by two classes of linear subspaces. We classify all threefolds of bidegree (1, p) inside Q 6.
KeywordsSTEKLOV Institute Pure Spinor Homology Class Exceptional Divisor Smooth Point
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