Abstract
We prove that the varieties \(X_{d_1 d_2 } \) of complete pairs of zero-dimensional subschemes of lengths d 1≥ 2, d 2≥ 4 on a smooth irreducible projective algebraic surface are singular.
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Timofeeva, N.V. Varieties of Complete Pairs of Zero-Dimensional Subschemes of Lengths ≥2 and ≥4 in Algebraic Surfaces. Mathematical Notes 73, 697–705 (2003). https://doi.org/10.1023/A:1024068923065
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DOI: https://doi.org/10.1023/A:1024068923065