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arXiv 0809.3417math.AGmath.AC
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G-biliaison of ladder Pfaffian varieties

Emanuela De Negri, Elisa Gorla

英文摘要:

The ideals generated by pfaffians of mixed size contained in a subladder of a skew-symmetric matrix of indeterminates define arithmetically Cohen-Macaulay, projectively normal, reduced and irreducible projective varieties. We show that these varieties belong to the G-biliaison class of a complete intersection. In particular, they are glicci.

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