Every Orientable Seifert 3-manifold Is a Real Component of a Uniruled Algebraic Variety
نویسندگان
چکیده
We show that any orientable Seifert 3-manifold is diffeomorphic to a connected component of the set of real points of a uniruled real algebraic variety, and prove a conjecture of János Kollár.
منابع مشابه
Every Connected Sum of Lens Spaces Is a Real Component of a Uniruled Algebraic Variety
Let M be a connected sum of finitely many lens spaces, and let N be a connected sum of finitely many copies of S × S. We show that there is a uniruled algebraic variety X such that the connected sum M#N of M and N is diffeomorphic to a connected component of the set of real points X(R) of X. In particular, any finite connected sum of lens spaces is diffeomorphic to a real component of a unirule...
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